Solve the quadratic equation x2 + x = 72 by factoring.

x = 8 or —9

Step-by-step explanation:

x2 + x = 72

Next, bring all variables to one side of the equation:

x2 + x — 72 = 0

We find the factors of —72 such that if we add such factors together, it must result to a positive 1. These factors are — 8 and 9. Imputing these factors in the equation, we obtain:

x2 — 8x + 9x — 72 = 0

We can factorise the expression as follows

x(x — 8) + 9(x — 8) = 0x

Since the same entity appears in both brackets, we shall pick one. Doing so we have:

(x — 8)(x + 9) = 0

The values of x are calculated by the following:

x —8 = 0 or x + 9 = 0

X = 8 or x = —9

the reporter's right

step-by-step explanation:

1/4 = .25 / 25%

10 you would take 50/ .2

step-by-step explanation: