Evaluate ( 3x - 7)² by using proper identity
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Answered by
9
Answer:
Step-by-step explanation:
using identity (a+b)²= a²+2ab+b²
= (3x)²+2×3x×7+(7)²
= 9x²+42x+49
plz mark me the brainliest...
Answered by
9
(3x -7) ^2 == (3x)^2 + 7^2 - 2 * 3x * 7
==>> 9x ^2 + 49 - 42x
is your answer
mark me brainliest plzzzz
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