Evaluate (3x + 4y) ²
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Answer:
1) (3x +4y)²
sol.
=> (3x)²+(4y)²+2 ×3x ×4y
=>. 9x² +16y +24xy
Step-by-step explanation:
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Answered by
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using the formula (a + b)² = a²+ 2ab + b²
(3x + 4y) ² = (3x)² + 2(3x)(4y) + (4y)²
(3x + 4y) ² = 9x² + 24xy +16y²
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