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Multiply Mentally
- (−7+3x)(7+3x)(-7+3 x)(7+3 x) A) 9x2+42x−499 x^{2}+42 x-49 B) 9x2−42x−499 x^{2}-42 x-49

Question 351

Multiple Choice

Multiply mentally
- (−7+3x) (7+3x) (-7+3 x) (7+3 x)


A) 9x2+42x−499 x^{2}+42 x-49
B) 9x2−42x−499 x^{2}-42 x-49
C) x2−49x^{2}-49
D) 9x2−499 x^{2}-49

Correct Answer:

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