(m+1)x^2+5x-21=0

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Solution for (m+1)x^2+5x-21=0 equation:


Simplifying
(m + 1) * x2 + 5x + -21 = 0

Reorder the terms:
(1 + m) * x2 + 5x + -21 = 0

Reorder the terms for easier multiplication:
x2(1 + m) + 5x + -21 = 0
(1 * x2 + m * x2) + 5x + -21 = 0

Reorder the terms:
(mx2 + 1x2) + 5x + -21 = 0
(mx2 + 1x2) + 5x + -21 = 0

Reorder the terms:
-21 + mx2 + 5x + 1x2 = 0

Solving
-21 + mx2 + 5x + 1x2 = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + mx2 + 5x + 21 + 1x2 = 0 + 21

Reorder the terms:
-21 + 21 + mx2 + 5x + 1x2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + mx2 + 5x + 1x2 = 0 + 21
mx2 + 5x + 1x2 = 0 + 21

Combine like terms: 0 + 21 = 21
mx2 + 5x + 1x2 = 21

Add '-5x' to each side of the equation.
mx2 + 5x + -5x + 1x2 = 21 + -5x

Combine like terms: 5x + -5x = 0
mx2 + 0 + 1x2 = 21 + -5x
mx2 + 1x2 = 21 + -5x

Add '-1x2' to each side of the equation.
mx2 + 1x2 + -1x2 = 21 + -5x + -1x2

Combine like terms: 1x2 + -1x2 = 0
mx2 + 0 = 21 + -5x + -1x2
mx2 = 21 + -5x + -1x2

Divide each side by 'x2'.
m = 21x-2 + -5x-1 + -1

Simplifying
m = 21x-2 + -5x-1 + -1

Reorder the terms:
m = -1 + 21x-2 + -5x-1

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