Question

Find the roots of the polynomial equation.

x^2 – x – 72 = 0

A.
9 and –8

B.
–6 and 6

C.
–2 and 16

D.
–9 and 8

Answer 1

split x such that sum of two numbers =-1
and product=-72

Answer 2

x^2-9x+8x-72

Answer 3

x(x-9)+8(x-9)

Answer 4

Is it A) or D) ?

Answer 5

on option if youve narrowed it down to 2, is to try them out. if they fit, its good ... if not, then its bad

Answer 6

*one option ...

Answer 7

ok take x-9 common

Answer 8

(x-9)(x+8)
can u do now?

Answer 9

wait what am I supposed to be doing? haha sorry

Answer 10

x=9 and x=-8