Question

expand using identities. (3x+4y)^2

Answer 1

Answer:

${(3x)}^{2} + 2 \times 3x \times 4y + {(4y)}^{2}$

${9x}^{2} + 24xy + {16y}^{2}$

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Answer 2

Answer:

Step-by-step explanation:

( 3x + 4y )²

= ( 3x )² + 2 ( 3x ) ( 4y ) + ( 4y )² [∵ ( a + b )² = a² + 2ab + b² ) ]

= 9x² + 24xy + 16y² is the answer.

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