7. If 2x + 3y = 16 and xy = 10, find the value of 4x2 +9y2.
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please mark as brilliant answer
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Hope it may helps you
Step-by-step explanation:
=>(2x)^2+(3y)^2
=>(2x+3y)^2 - 2×2x×3y
=>(16)^2-12xy
=>256-12(10)
=>256-120
=>136
I have used the formula of a^2+b^2.
The formula for this equation is ______
(a+b)^2-2ab
Thank you
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