Solve the quadratic by factoring.4, x, squared, minus, 16, x, plus, 12, equals, minus, 9, x, plus, 94x 2 −16x+12=−9x+9
Question
Solve the quadratic by factoring.
Solution
First, let's simplify the equation by moving all terms to one side.
4x^2 - 16x + 12 = -9x + 9
This simplifies to:
4x^2 - 16x + 9x + 12 - 9 = 0
Which further simplifies to:
4x^2 - 7x + 3 = 0
Now, let's factor the quadratic equation. We're looking for two numbers that multiply to (4*3)=12 and add up to -7. Those numbers are -4 and -3.
So, we can rewrite -7x as -4x - 3x:
4x^2 - 4x - 3x + 3 = 0
Now, group the terms two at a time:
4x(x - 1) - 3(x - 1) = 0
Now, you can see that (x - 1) is a common factor:
(4x - 3)(x - 1) = 0
Setting each factor equal to zero gives the solutions to the equation:
4x - 3 = 0 => x = 3/4
x - 1 = 0 => x = 1
So, the solutions to the equation 4x^2 - 16x + 12 = -9x + 9 are x = 3/4 and x = 1.
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