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Decompose the following formula: (m ^ 2 + 6m) ^ 2 + 18 (m ^ 2 + 6m) + 81
(m^2+6m)^2+18(m^2+6m)+81
=(m^2+6m+9)^2
=(m+3)^4
Solving 112 practical problems of quadratic equation of one variable
And 19 one variable quadratic equation calculation problems, 112 quadratic radical calculation
Let me help you. That should be enough. 3x & sup2; - 1 = 0 X & sup2; + 12x + 36 = 24x & sup2; - 4x + 1 = 8 4 (6x-7) & sup2; - 9 = 0 X & sup2; + X-1 = 0 X & sup2; + 1 / 6x-1 / 3 = 03x & sup2; - 5x = 2 x & sup2; + 8x = 9 x & sup2; + 12x-15 = 0 X & sup2; - 9x + 8 = 0 X & sup2; + 6x-27 = 0 X & sup2; -
Here are the plans of the two swimming pools at the scale of 1:1000
If you go swimming and see 40 people in pool a and 100 people in Pool B, which pool are you going to swim in? (length and width: the first pool is 1.4cm long and 1.2cm wide, the second pool is 3.1cm long and 2.2cm wide) thank you,
According to the scale of 1:1000, the area of the first swimming pool is 14 × 12 = 168 square meters, the area of the second swimming pool is 31 × 22 = 682 square meters, the personnel density of the first swimming pool is 40 / 168 ≈ 0.24 people / square meters, and the personnel density of the second swimming pool is 100 / 682 ≈ 0.15 people / square meters
9 and 7 / 8 times 10 and 1 / 8 simple operation, write the process
9 and 7 / 8 times 10 and 1 / 8
=(10-1/8)(10+1/8)
=10*10-1/8*1/8
=100-1/64
=99 and 63 / 64
What are the common words and idioms that contain the word "Mao"?
Such as "maopiao". Do not use derogatory words, such as "Maoshoumaojiao", "Caterpillar", etc
Why are they all idioms, no words?
Hair, feather, drizzle
(85 + 27) × (27 + 15) recursive equation calculation
Brief calculation method
（85+27）×（27+15）
=112×42
=4704
Solve the equation 5x + (1 / 4-x) = 25
5x+(1/4-x)=25
5x+1/4-x=25
4x=25-1/4
4x=(100-1)/4
x=99/16
Through reading, I have learned a lot about how to be a man and new knowledge
Through reading, I understand a lot of the truth of life. Understand a lot of new knowledge
How many kilometers is 350 meters
350 m = 350 / 1000 km = 7 / 20 km (the same above and below divided by 50)
Simple calculation method of 9.5 + 6.17 + 4.85
9.5+6.17+0.5+0.5+3.83+0.02=(9.5+0.5)+(6.17+3.83)+0.02=20.02
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