(Y+3)(2Y-7)=0

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Solution for (Y+3)(2Y-7)=0 equation:


Simplifying
(Y + 3)(2Y + -7) = 0

Reorder the terms:
(3 + Y)(2Y + -7) = 0

Reorder the terms:
(3 + Y)(-7 + 2Y) = 0

Multiply (3 + Y) * (-7 + 2Y)
(3(-7 + 2Y) + Y(-7 + 2Y)) = 0
((-7 * 3 + 2Y * 3) + Y(-7 + 2Y)) = 0
((-21 + 6Y) + Y(-7 + 2Y)) = 0
(-21 + 6Y + (-7 * Y + 2Y * Y)) = 0
(-21 + 6Y + (-7Y + 2Y2)) = 0

Combine like terms: 6Y + -7Y = -1Y
(-21 + -1Y + 2Y2) = 0

Solving
-21 + -1Y + 2Y2 = 0

Solving for variable 'Y'.

Factor a trinomial.
(-3 + -1Y)(7 + -2Y) = 0

Subproblem 1

Set the factor '(-3 + -1Y)' equal to zero and attempt to solve: Simplifying -3 + -1Y = 0 Solving -3 + -1Y = 0 Move all terms containing Y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1Y = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1Y = 0 + 3 -1Y = 0 + 3 Combine like terms: 0 + 3 = 3 -1Y = 3 Divide each side by '-1'. Y = -3 Simplifying Y = -3

Subproblem 2

Set the factor '(7 + -2Y)' equal to zero and attempt to solve: Simplifying 7 + -2Y = 0 Solving 7 + -2Y = 0 Move all terms containing Y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2Y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2Y = 0 + -7 -2Y = 0 + -7 Combine like terms: 0 + -7 = -7 -2Y = -7 Divide each side by '-2'. Y = 3.5 Simplifying Y = 3.5

Solution

Y = {-3, 3.5}

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