If the equation (2x-1) &# 178; = 3-A has a solution, then the value range of a is?

If the equation (2x-1) &# 178; = 3-A has a solution, then the value range of a is?

（2x-1 ）²≥0
So if there is a solution, then 3-A ≥ 0
a≤3

Find the value range of M, so that the equation x & # 178; - 2x + M-1 = 0, find the following problems
(1) There is one root is zero. (2) there are two positive and (3) two unequal negative roots. (4) there is one positive root and one negative root. (5) one root is larger than 1, and one root is smaller than 1

Find the value range of M, so that the equation x & # 178; - 2x + M-1 = 0, find the following problems
Δ=4-4(m-1)≥0
m≤2
(1) One is zero;
x1x2=m-1=0
m=1
(2) There are two positive roots
x1x2=m-1>0
one

If the equation 2x & # 178; + x-2m + 1 = 0 has a positive real root and a negative real root, then the value range of M
A m＞½ B m＜½ C m＞﹣½ D m＞7/16.

The equation 2x & # 178; + x-2m + 1 = 0 has a positive real root and a negative real root
So the discriminant = 1-8 (- 2m + 1) > 0
So 1 + 16m-8 > 0
m>7/16
So the product of two = (1-2m) / 21 / 2
So choose a

It is known that a, B and C are three sides of triangle ABC, and the equation x & # 178; - 2x + LG (C & # 178; - B & # 178;) - 2lg a + 1 = 0 about X has equal roots, so the shape of triangle ABC can be judged

It's a right triangle
prove:
The equation x & # 178; - 2x + LG (C & # 178; - B & # 178;) - 2lga + 1 = 0 has equal roots
The discriminant = 4-4 [LG (C & # 178; - B & # 178;) - 2lga + 1] = 0
So LG (C & # 178; - B & # 178;) - 2lga + 1 = 1
So LG (C & # 178; - B & # 178;) - 2lga = 0
2lga=lga²
So LG (C & # 178; - B & # 178;) = LGA & # 178;
So C & # 178; - B & # 178; = A & # 178;
c²=b²+a²
So it's a right triangle

English translation
I'm not a scapegoat. When you don't want me, you kick me aside. When you use me, you force me to do something you don't want to do

I am not a scapegoat!Do not kick me out when I am useless,but force me to do what you want when I am useful.

I've been waiting for you!

I've been waiting for you.
I am waiting for you or I am always waiting for you
In English, the modifier "always" is usually used in the present perfect tense to express a continuous action or state, while the word "always" does not need a literal translation, and can be expressed in tense

English translation
Please help me translate the following words into English as soon as possible. If you go to the translator, please don't reply: "have you returned to the United States now? If so, when will you come back? I've worked hard these months. Pay attention to your health."

Have you went back to America yet?if yes,when will u come back?you've been hard-working these days,pay attention to your health.

English translation

Washington is American capital.

So in America you can find almost every kind of food from other countries

So you can find almost each kind of food from other countries in the USA

They come from American English translators

They come from America.
They are from the USA
Note: come from = be from
See if it's helpful for you. I wish you progress in your study and make progress! (*^__ ^*)