Question

3) (3x +47-5p) 2 solve ​

Answer 1

Step-by-step explanation:

${(3x + 4y - 7p)}^{2} = (3x + 4y - 7p)(3x + 4y - 7p) \\ {(3x)}^{2} + {(4y)}^{2} + {(5p)}^{2} + (2 \times 3x \times 4y) - (2 \times 4y \times 5p) - (2 \times 3x \times 5p) \\ 9 {x}^{2} + 16 {y}^{2} + 25 {p}^{2} + 24xy - 40yp - 30xp$

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