Question

plz send me step by step solution​plz plz plz plz plz llz plz ​

Answer 1

Step-by-step explanation:

Given that,

3m² + 2m - 7 = 0

On comparing the equation ax² + bx + c = 0

a = 3, b = 2 and c  = - 7

Now,

We know that,

D = b² - 4ac

=(2)² - 4×3×(-7)

=4 + 84

=88

Now,

By quadratic formula,

$x=\frac{-b+\sqrt{D}}{2a}\\=>x=\frac{-2+\sqrt{88}}{6}\\=>x=\frac{-2+2\sqrt{22}}{6}\\=>x=\frac{-1+\sqrt{22}}{3}$

or

$x=\frac{-b-\sqrt{D}}{2a}\\=>x=\frac{-2-\sqrt{88}}{6}\\=>x=\frac{-2-2\sqrt{22}}{6}\\=>x=\frac{-1-\sqrt{22}}{3}$

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