rissagoodwin
rissagoodwin
25-11-2017
Mathematics
contestada
Solve for x 4x^2+28x+49=0
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zrh2sfo
zrh2sfo
25-11-2017
4 x^2 + 28 x + 49 = 0
Divide both sides by 4:
x^2 + 7 x + 49/4 = 0
Write the left hand side as a square:
(x + 7/2)^2 = 0
Take the square root of both sides:
x + 7/2 = 0
Subtract 7/2 from both sides:
Answer: x = -7/2
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