Find the (4+5x)(4+5x) using identities
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1
Answer:
Step-by-step explanation:
(4+5x)(4+5x)
=(4+5x)^2
=4^2+2×4×5x+(5x)^2
=16+40x+25x^2
Answered by
2
(4+5x)(4+5x) = (4+5x)²
(a+b)² = a² + 2ab + b²
So, (4+5x)² = 4² + 2*4*5x + (5x)² = 16 + 40x + 25x²
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