Use the zero product property to find the solutions to the equation x2 + 12 = 7x.
The zero product property is nothing but if ab = 0 ⇒ either a = 0 or b = 0 or both a and b are equal to zero.
Answer: x = 3 or x = 4 are the solutions of the given quadratic equation x2 + 12 = 7x, obtained by using the zero product property.
Let us use the zero product property to find the solutions to the given equation.
Explanation:
We inherently use the zero product property in solving the quadratic equations in the factorization method by splitting the middle term.
x2 + 12 = 7x
x2 - 7x + 12 = 0
x2 - 4x - 3x + 12 = 0 -------------> splitting the middle term
x(x - 4) - 3(x - 4) = 0
(x - 4) (x - 3) = 0
either (x - 4) = 0 or (x - 3) = 0 or both (x - 4) & (x - 3) -------------> application of zero product property
(x - 4) = 0 ⇒ x = 4
or,
(x - 3) = 0 ⇒ x = 3
Thus, x = 3 or x = 4 are the solutions of the given quadratic equation x2 + 12 = 7x.
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