(d)(d)-3d=70

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Solution for (d)(d)-3d=70 equation:


Simplifying
(d)(d) + -3d = 70

Multiply d * d
d2 + -3d = 70

Reorder the terms:
-3d + d2 = 70

Solving
-3d + d2 = 70

Solving for variable 'd'.

Reorder the terms:
-70 + -3d + d2 = 70 + -70

Combine like terms: 70 + -70 = 0
-70 + -3d + d2 = 0

Factor a trinomial.
(-7 + -1d)(10 + -1d) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(10 + -1d)' equal to zero and attempt to solve: Simplifying 10 + -1d = 0 Solving 10 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1d = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1d = 0 + -10 -1d = 0 + -10 Combine like terms: 0 + -10 = -10 -1d = -10 Divide each side by '-1'. d = 10 Simplifying d = 10

Solution

d = {-7, 10}

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