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Andreas93 [3]
3 years ago
7

Which point is an x-intercept Og the quadratic function f(x) = (x-4)(x+2)?

Mathematics
2 answers:
user100 [1]3 years ago
8 0
<span>(-6,0) would be correct </span>
worty [1.4K]3 years ago
3 0
Hi there!

To find the x-intercept of the function we need to calculate f(x) = 0.

(x - 4)(x + 2) = 0

Rule AB = 0, gives A = 0 or B = 0.
x - 4 = 0 \: \: \: or \: \: \: x + 2 = 0

Add 4 to both sides or subtract 2 from both sides.
x = 4 \: \: \: \: \: \: \: \: \: \: or \: \: \: x = - 2

Hence, the solutions are:
(4, 0) & (-2, 0)
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