use suitable identity to find each of the following products. (3x-7) (3x-7)
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Answer:
9x² + 49 - 42x
Step-by-step explanation:
a/q;
= (3x-7)(3x-7)
= (3x-7)²
= (3x)² + (7)² - 2(3x)(7)
= 9x² + 49 - 42x, ans..
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