Question

Find the constant k so that : -x2 - (k + 7)x - 8 = -(x - 2)(x - 4)

Answer 1

Expand the left side, expand the right side, cancel equal terms and solve for k.

Answer 2

Is the first two and exponent

Answer 3

an*

Answer 4

Write x square as x^2 for clarity.

Answer 5

Iight ,

Answer 6

Using the foil method you can see that you get a total of x^2-6x+8
Then just take -6 and set it equal to k+7
k+7=-6
k=-13

Answer 7

Thank you ^_^

Answer 8

You're welcome