Question

Factorise the following 30a²-27x-21​

Answer 1

Answer:

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Step-by-step explanation:

$30x {}^{2} −27x−21 \\ 3( {10x}^{2} - 9x - 7) \\ 3( {10x}^{2} - 14x + 5x - 7) \\ 3[2x(5x - 7) + 1(5x - 7)]\\ 3(2x + 1)(5x - 7)$