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Please help me urgent.help me​

Answer»

Step-by-step EXPLANATION:

\huge\underline\mathfrak{Answer}

1) {9x}^{2} + 12xy + {4y}^{2}

= {(3x)}^{2} + 2(2x)(3y) + {(4y)}^{2}

= {(3x + 4y)}^{2}

2) {16x}^{2} + 8y + {y}^{2}

= {(4x)}^{2} + 2(4x)(y) + {(y)}^{2}

= {(4x + y)}^{2}

3) {16x }^{2} - 8xy + {y}^{2}

= {(4x)}^{2} - 2(4x)(y) + {(y)}^{2}

= {(4x - y)}^{2}

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