BaileyElizabethRay
23.06.2020 •
Mathematics
What is: x^2+2x-35? Please help
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Ответ:
(x +7)(x - 5)
Step-by-step explanation:
x² + 2x - 35
- 35 = 7*(-5)
2 = 7 + (-5)
x² + 2x - 35 = (x +7)(x - 5)
Ответ:
Once you have (X+7)(X-5) you set each term to zero to find the value of x.
So x+7=0 X=-7
And x-5=0 X=5
So your possible values for x are -7 and 5
Ответ:
28
Step-by-step explanation:
Clara writes the equation (x – 13)(x + 8) = 196 to solve for the missing side length of a rectangle represented by the factor x + 8.
LEts solve the equation for x
WE multiply the left hand side using FOIL method
Combine like terms
Now we factor the left hand side
Product is -300 and sum is -5,
Now set each factor =0 and solve for x
Length cannot be negative so we take only x= 20
the missing side length represented by x + 8