send me the correct answer with step . by . step exploitation
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Answered by
1
Answer:
7x^2-2×7x×3+3^2
(7x-3)^2
Answered by
2
Answer:
(7x - 3)²
Step-by-step explanation:
Equation is 49x² - 42x + 9
==> 49x² - 21x - 21x + 9
==> 7x(7x - 3) - 3(7x - 3)
==> (7x - 3)(7x - 3)
==> (7x - 3)²
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