D. It Is The Most Fitting Answer. The Other 3 Equal More Than Needed.
The answer is: x = 2 ∨ x = -1
Answer: It is D.
Step-by-step explanation: I have taken this quiz before!
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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
