If 2x + 3y = 8 and xy = 4, then find the value of 4x square + 9y square
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Answer:
- (2x)²+12xy+(3y)²
Step-by-step explanation:
- 4x+9y
= 2²x²+2.2x.3y+ 3³y²
=(2x)²+ 12xy+(3y)²
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