use suitable identity to find the following
(4p+q/5 + r/3)²
plzz i need answer urgently
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Answer:
16p² + q²/25 + r²/9 + 8pq/5 + 2qr/15 + 8rp/3
Step-by-step explanation:
(4p+q/5 + r/3)²
(a+b+c)²=a²+b²+c²+2( ab+bc+ca)
(4p+q/5 + r/3)²=(4p)²+(q/5)²+(r/3)²+2 { ((4p)(q/5)+(q/5)((r/3) +(r/3)((4p) }
=16p² + q²/25 + r²/9 + 8pq/5 + 2qr/15 + 8rp/3
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