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If x is equal to 2 y is equal to -1 then the value of x square +4xy+4y square is PL answer the question |
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Answer» 4Explanation:if X = 2y, then y = x/2, and if x = -1 then y = (-1/2)so x² + 4XY + 4y²= [(-1)²] + [4 × (-1) × (-1/2)] + [4 × (-1/2) × (-1/2) ]= 1 + [(-4/1) × (-1/2)] + [ 4 × 1/4 ]= 1 + 4/2 + 1= 1 + 2 + 1= 4 |
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