Question

Write the quadratic equation in general form. What is the value of b2 - 4ac?

1 = 2x2 + 5x?

Answer 1

the answer is 33......

Answer 2

`ax^2+bx+c=0` formula


`1=2x^2+5x \\\\ -2x^2-5x+1=0 \ |*(-1) \\\\ 2x^2+5x-1=0\\\\ a=2, \ b=5 , \ c=-1 \\\\ b^2-4ac=5^2-4*2*(-1)=25+8=33`

Answer:
33