factorize q^2-10q±21
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0
Answer:
I will answer you soon ok
Answered by
3
Answer:
q = 3 or q = 7
Step-by-step explanation:
q² - 10q +21 = 0
∴ q² -3q - 7q +21 = 0
∴ q( q -3) -7 (q - 3) = 0
∴ (q - 3) (q - 7) = 0
∴ q - 3 = 0 or q - 7= 0
∴ q = 3 or q = 7
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