Question

Solve x2 − 10x = −21. (6 points)

Answer 1

The CORRECT answer is::

x = -3 and x = -7

WORK::

Move ALL terms to the left side and set equal to zero. Then set each factor equal to zero.

Answer 2

Answer:

x= 7,3

Step-by-step explanation:

-Let's solve your equation step-by-step.

x^2−10x=−21

-Step 1: Subtract -21 from both sides.

x^2−10x−(−21)=−21−(−21)

x^2−10x+21=0

-Step 2: Factor left side of the equation

(x−3)(x−7)=0

-Step 3: Set factors equal to 0.

x−3=0 or x−7=0

= =