Well, if you do this in reverse
23+17 = 40
40-23 = 17
40 would be your answer.
Answer:
10000
Step-by-step explanation:
85000 is nearest to 10000
Answer:
Step-by-step explanation:
13x^2 + 56x + 75 = 4x^2 - 10x - 46
You need to first combine like terms, so subtract 4x^2 from both sides,
9x^2 + 56x + 75 = -10x - 46
then add -10x to both sides
9x^2 +66x + 75 = -46
then add -46 to both sides
9x^2 + 66x + 121 = 0
Then use the quadratic formula,
So
a = 9
b= 66
c = 121
![x=\frac{-66+-\sqrt[]{66^2 - (4*9*121)} }{2*9}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-66%2B-%5Csqrt%5B%5D%7B66%5E2%20-%20%284%2A9%2A121%29%7D%20%7D%7B2%2A9%7D)
That simplifies to
![x = \frac{-66+-\sqrt{0} }{18}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-66%2B-%5Csqrt%7B0%7D%20%7D%7B18%7D)
Which simplifies to
![x = \frac{-66}{18}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-66%7D%7B18%7D)
Which simplifies to ![x = - \frac{11}{3}](https://tex.z-dn.net/?f=x%20%3D%20-%20%5Cfrac%7B11%7D%7B3%7D)
or
![x = -3\frac{2}{3}](https://tex.z-dn.net/?f=x%20%3D%20-3%5Cfrac%7B2%7D%7B3%7D)