Question

Solve equation:
(d+2)(d-5)=-6

Answer 1

Can anyone help!!!

Answer 2

i think its d^2 - 5d + 2d - 10 = -6
d^2-3d-10=-6
d^2-3d=4

Answer 3

and d = -2 or d= 5

Answer 4

well, these are easier to solve if you expand them and then factor them back out once you have something that equals zero

Answer 5

so for example, if you use foil, you get:

Answer 6

d^2 -5d + 2d -10 = -6

Answer 7

d^2 -3d -4 = 0

Answer 8

now that you have the right side equal to zero, you can factor back out

Answer 9

and get (d+1)(d-4) = 0

Answer 10

so once you have a factored left hand side that equals zero, you know that the solutions are the two values that make either of the left hand components zero

Answer 11

since zero times anything is zero

Answer 12

so one of the solutions is d=-1

Answer 13

can you get the other now?