Question

factorize z²+ 15z + 36​

Answer 1

Answer:

The first term is, z2 its coefficient is 1 .

The middle term is, +15z its coefficient is 15 .

The last term, "the constant", is +36

Step-1 : Multiply the coefficient of the first term by the constant 1 • 36 = 36

Step-2 : Find two factors of 36 whose sum equals the coefficient of the middle term, which is 15 .

-36 + -1 = -37

-18 + -2 = -20

-12 + -3 = -15

-9 + -4 = -13

-6 + -6 = -12

-4 + -9 = -13

-3 + -12 = -15

-2 + -18 = -20

-1 + -36 = -37

1 + 36 = 37

2 + 18 = 20

3 + 12 = 15 That's it