Question

Use the quadratic formula to solve 2y2 + 3y = 2.

A.


{–½, 2}


B.


{–½, –2}


C.


{½, 2}


D.


{½, –2}

Answer 1

Assuming you mean 2y² + 3y = 2 we are solving the quadratic
To solve a quadratic formula you need to know the formula.
Formula > x1, 2 =
`(-b\pm √(b^2-4ac))/(2a)`
Now we must plug in the values. a = 2 b = 3 c = -2

`y=(-3+√(3^2-4\cdot \:2\left(-2\right)))/(2\cdot \:2)=(1)/(2) \ \textgreater \ y=(-3-√(3^2-4\cdot \:2\left(-2\right)))/(2\cdot \:2)=-2`
So now we know our answer should be {1/2, -2}