Question

plz solve this question​

Answer 1

$\huge\underline\mathbb{\red S\pink {O}\purple {L} \blue {UT} \orange {I}\green {ON :}}$

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$\large\boxed{\fcolorbox {blue}{yellow} {Identity used :- (a+b+c)² = a² + b² + c² + 2ab + 2bc +2ca}}$

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$➣ \: \: {x}^{2} + {y}^{2} + {9z}^{2} + 2xy + 6yz + 6xz$

${(x)}^{2} + {(y)}^{2} + {(3z)}^{2} + 2 \times x \times y + 2 \times y \times 3z + 2 \times x \times 3z$

${(x + y + 3z)}^{2} \\ \\ (x + y + z)(x + y + z)$

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$\large\boxed{\fcolorbox {blue}{yellow} {ANSWER :- (x+y+z)(x+y+z)}}$