(70-l)l=1200

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Solution for (70-l)l=1200 equation:


Simplifying
(70 + -1l) * l = 1200

Reorder the terms for easier multiplication:
l(70 + -1l) = 1200
(70 * l + -1l * l) = 1200
(70l + -1l2) = 1200

Solving
70l + -1l2 = 1200

Solving for variable 'l'.

Reorder the terms:
-1200 + 70l + -1l2 = 1200 + -1200

Combine like terms: 1200 + -1200 = 0
-1200 + 70l + -1l2 = 0

Factor a trinomial.
(-40 + l)(30 + -1l) = 0

Subproblem 1

Set the factor '(-40 + l)' equal to zero and attempt to solve: Simplifying -40 + l = 0 Solving -40 + l = 0 Move all terms containing l to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + l = 0 + 40 Combine like terms: -40 + 40 = 0 0 + l = 0 + 40 l = 0 + 40 Combine like terms: 0 + 40 = 40 l = 40 Simplifying l = 40

Subproblem 2

Set the factor '(30 + -1l)' equal to zero and attempt to solve: Simplifying 30 + -1l = 0 Solving 30 + -1l = 0 Move all terms containing l to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -1l = 0 + -30 Combine like terms: 30 + -30 = 0 0 + -1l = 0 + -30 -1l = 0 + -30 Combine like terms: 0 + -30 = -30 -1l = -30 Divide each side by '-1'. l = 30 Simplifying l = 30

Solution

l = {40, 30}

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