2 years ago

If 4x^2-100=0 the roots of the equation are

1 answer:

8 0

Your equation:       4x² - 100   = 0

Factor the left side: (2x + 10) · (2x - 10) = 0

This equation is true if either factor is zero.

-- One factor:    2x + 10 = 0

Divide each side by 2: x + 5 = 0
Subtract 5 from each side: x = -5 .

-- The other factor:       2x - 10 = 0

Divide each side by 2: x + 5 = 0
Add 5 to each side: x =  5 .

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