((-7x^2)+3)(x^2-5)=

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Solution for ((-7x^2)+3)(x^2-5)= equation:


Simplifying
((-7x2) + 3)(x2 + -5) = 0

Reorder the terms:
(3 + (-7x2))(x2 + -5) = 0

Reorder the terms:
(3 + (-7x2))(-5 + x2) = 0

Multiply (3 + (-7x2)) * (-5 + x2)
(3(-5 + x2) + (-7x2)(-5 + x2)) = 0
((-5 * 3 + x2 * 3) + (-7x2)(-5 + x2)) = 0
((-15 + 3x2) + (-7x2)(-5 + x2)) = 0
(-15 + 3x2 + (-5 * -7x2 + x2 * -7x2)) = 0
(-15 + 3x2 + (35x2 + -7x4)) = 0

Combine like terms: 3x2 + 35x2 = 38x2
(-15 + 38x2 + -7x4) = 0

Solving
-15 + 38x2 + -7x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + x2)(3 + -7x2) = 0

Subproblem 1

Set the factor '(-5 + x2)' equal to zero and attempt to solve: Simplifying -5 + x2 = 0 Solving -5 + x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + x2 = 0 + 5 x2 = 0 + 5 Combine like terms: 0 + 5 = 5 x2 = 5 Simplifying x2 = 5 Take the square root of each side: x = {-2.236067978, 2.236067978}

Subproblem 2

Set the factor '(3 + -7x2)' equal to zero and attempt to solve: Simplifying 3 + -7x2 = 0 Solving 3 + -7x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x2 = 0 + -3 -7x2 = 0 + -3 Combine like terms: 0 + -3 = -3 -7x2 = -3 Divide each side by '-7'. x2 = 0.4285714286 Simplifying x2 = 0.4285714286 Take the square root of each side: x = {-0.654653671, 0.654653671}

Solution

x = {-2.236067978, 2.236067978, -0.654653671, 0.654653671}

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