Find the value of x. (3x-9) (x+7)
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Answer:
value of x may be -7 or 3
Step-by-step explanation:
(3x-9)(x+7)
3x2+21x-9x-63=0
x2+7x-3x-21=0
x(x+7)-3(x+7)=0
x-3=0 or x+7=0
x= -7 or x=3
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