0=98-7x-x^2

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Solution for 0=98-7x-x^2 equation:


Simplifying
0 = 98 + -7x + -1x2

Solving
0 = 98 + -7x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + -98 = -98
-98 + 7x + x2 = 98 + -7x + -1x2 + -98 + 7x + x2

Reorder the terms:
-98 + 7x + x2 = 98 + -98 + -7x + 7x + -1x2 + x2

Combine like terms: 98 + -98 = 0
-98 + 7x + x2 = 0 + -7x + 7x + -1x2 + x2
-98 + 7x + x2 = -7x + 7x + -1x2 + x2

Combine like terms: -7x + 7x = 0
-98 + 7x + x2 = 0 + -1x2 + x2
-98 + 7x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-98 + 7x + x2 = 0

Factor a trinomial.
(-14 + -1x)(7 + -1x) = 0

Subproblem 1

Set the factor '(-14 + -1x)' equal to zero and attempt to solve: Simplifying -14 + -1x = 0 Solving -14 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -1x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -1x = 0 + 14 -1x = 0 + 14 Combine like terms: 0 + 14 = 14 -1x = 14 Divide each side by '-1'. x = -14 Simplifying x = -14

Subproblem 2

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Solution

x = {-14, 7}

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