Question

k(a + b + c) = ka + kb + kc के प्रयोग से 4x(3x + 2x -7) का मान ज्ञात करें।

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Answer 1

Answer:

12x +8x -28

20x -28 is answer

Answer 2

considering the given formula.:

$4x(3x + 2x -7) \\ = 4x \times 3x + 4x \times 2x - 4x \times 7 \\ = 12 {x}^{2} + 8 {x}^{2} - 28x \\ = 20 {x}^{2} - 28x$