Question

what is the root of the qudractic equation x2-3x-10=0 by factorisation?​

Answer 1

We have,

$\qquad \: \: {x}^{2} - 3x - 10 = 0 \\ \\ \implies {x}^{2} - (5 - 2)x - 10 = 0 \\ \\ \implies {x}^{2} - 5x + 2x - 10 = 0 \\ \\ \implies x(x - 5) + 2(x - 5) = 0 \\ \\ \implies (x - 5)(x + 2) = 0 \\ \\ \implies x - 5 = 0 \: \boxed{or} \: x + 2 = 0 \\ \\ \implies x = 5 \qquad \boxed{or} \: x = - 2$

Answer 2

Answer:

5or2

Step-by-step explanation:

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