1.
Find the following by using Identity-I.
(1) (2x + 5)2
(10) (8x + 3y)2
Answers
Answered by
19
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(1) (2x + 5)²
➡️ (2x)² + (5)² + 2(2x)(5)
➡️ 4x² + 25 + 20x
(2) (8x + 3y)²
➡️ (8x)² + (3y)² + 2(8x)(3y)
➡️ 64x² + 9y² + 48xy
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Answered by
3
Answer:
(1) (2x + 5)²
=(2x)² + (5)² + 2(2x)(5)
=4x² + 20x + 25
(2) (8x + 3y)²
=(8x)² + (3y)² + 2(8x)(3y)
= 64x² +48xy + 9y²
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