SOLUTION: please help solve the equation by use of the quadratic formula
5a^2 + 4a =8
appreciate all the help
Algebra.Com
Question 1051765: please help solve the equation by use of the quadratic formula
5a^2 + 4a =8
appreciate all the help
Found 2 solutions by josgarithmetic, addingup:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Is the quadratic factorable? Easy solving once that done, IF possible. Otherwise, quadratic solution formula....
, so at least two real (maybe maybe not irrational) solutions.
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
Quadratic equation formula:
ax^2+bx+c = 0
With your numbers:
5a^2+4a = 8 subtract 8 on both sides
5a^2+4a-8 = 0
divide all sides by 5:
x2+0.8x-1.6 = 0
x = -(0.8÷2)+√(0.8÷2)2+1.6 = -0.4+1.32664991614 = 0.926649916142
or
x = -(0.8÷2)-√(0.8÷2)2+1.6 = -0.4-1.32664991614 = -1.72664991614
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