Solve x2 − 10x = −21. (6 points)
2 answers:
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:
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
= =
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Hope this helps :)
