-What is the 2009 power of 7 minus 14 times 7's 2008 power minus - 49 times 7's 2007 power fast -How many times 2008 minus seven times seven times 2007 is seven times seven

-What is the 2009 power of 7 minus 14 times 7's 2008 power minus - 49 times 7's 2007 power fast -How many times 2008 minus seven times seven times 2007 is seven times seven

-7^2009-14*7^2008-(-49*7^2007)
=-7^2009-2*7^(2008+1)+7^(2+2007)
=-2*7^2009

If the square of x minus 2 times the root, 7 times x plus 2 equals 0, then the fourth power of x minus 24x square=

The first method: from the root formula of the quadratic equation of one variable and simplified to x = √ 7 ± √ 5, x ^ 2 = 12 ± 2 √ 35, x ^ 4 = 284 ± 48 √ 35, substituting x ^ 4-24x ^ 2 = (284 ± 48 √ 35) - 24 (12 ± 2 √ 35) = - 4
The second method: from the meaning of the title, we can see that x ^ 2 = 2 √ 7X-2, x ^ 4 = 28x ^ 2-8 √ 7x + 4, we can get x ^ 4-24x ^ 2 = (28x ^ 2-8 √ 7x + 4) - 24x ^ 2 = 4x ^ 2-8 √ 7x + 4 = 4 (x ^ 2-2 √ 7x) + 4

If 2x + 5Y minus 3 equals 0, find the x power of 4 times the Y power of 32

2x+5y-3=0 2x+5y=3
The x power of 4 times the Y power of 32 = 2 ^ 2x times the (2x + 5Y) power of 2 = 3 power of 2 = 8

16 times x to the fourth power minus 1 equals

16 times x to the fourth power minus 1
=The fourth power of (2x) - 1
=[(2x) Square-1] [2x) square + 1]
=(2x-1) (2x + 1) (4x square + 1)

Calculation: (2.1 × 10 to the 5th power) × (- 7 × 10 to the 9th power)

(2.1 × 10 to the 5th power) × (- 7 × 10 to the 9th power)
=2.1×10^5÷(-7)÷10^9
= 2.1÷(-7)×(10^5÷10^9)
= -0.3×10^-4
= -0.00003

Calculation: the 9th power of 0.25 * the 3rd power of 64 * the minus 1 / 2 power * the 0th power of 7= I've finished the screenshot

Calculation: the 9th power of 0.25 * the 3rd power of 64 * the minus 1 / 2 power * the 0th power of 7=
=(1/4)^9×(2^6)^3×(-1/2)^(-2)×1
=1/2^18×2^18×4×1
=4;
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Calculation: 1) 2 - [1 - (1 / 2 * 2 / 3-1)] * (- 0.75) 2nd power + (- 0.5) 3th power * 5

2-[1-(1/2×2/3-1)]×(-0.75)²+(-0.5)³×5²=2-[1-(1/3-1)]×（9/16）+（-1/8）×25=2－[1－（-2/3）]×(9/16)－(25/8)=2－(5/3)×(9/16)－(25/8)=2－(15/16)－(25/8)=(17/16)－(25/8)=－33/16...

: calculate (1-1 / 2 to the second power) (1-1 / 3 to the third power)... (1-1 / 9 to the ninth power) (1-1 / 10 to the tenth power)

Use the square difference
=(1-1/2)(1+1/2)(1-1/3)(1+1/3)…… (1-1/10)(1+1/10)
=(1/2)(3/2)(2/3)(4/3)…… (9/10)(11/10)
Intermediate reduction
=(1/2)(11/10)
=11/20

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 is added to the second power of 99

(1+3+…… +(2 * n-1)) = n ^ 299 = 2 * 50-1 the result you want is 50 ^ 2 = 2500

What is the 9th power of 2 + the 99th power of 2

6.33825300114115*10^29