Question

Find the root of 8x^2+2x-15=0​

Answer 1

Answer:

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Step-by-step explanation:

Roots are -3/2 and 5/4

Answer 2

Step-by-step explanation:

$\blue{ \bold{ \underline{ \bf{QUESTION : - }}}}$

Find the root of 8x^2+2x-15=0

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• $\large{ \sf{ {8x}^{2} + 2x - 15}}$

$\boxed{ \huge{ \sf{ \bold{ to \: find}}}}$

• Fatorise And Find the value of X

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$\large{ \sf{ {8x}^{2} + 2x - 15}}$

$\large{ \sf{ \implies{ {8x}^{2} - 12x + 10x - 15 = 0}}}$

$\large{ \sf{ \implies{4x(2x - 3) + 5(2x - 3) = 0}}}$

$\large{ \sf{ \implies{(4x + 5) \: \: (2x - 3)}}} = 0$

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1. $\purple{\large{ \sf{(4x + 5) = 0}}}$

$\purple{\large{ \sf{ \implies{4x = - 5}}}}$

$\purple{\large{ \sf{ \implies{x = \frac{ - 5}{4}}}}}$

2.$\red{\large{ \sf{(2x - 3) = 0}}}$

$\red{\large{ \sf{ \implies{2x = 3}}}}$

$\red{\large{ \sf{ \implies{x = \frac{3}{2}}}}}$

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