Question

When the quadratic equation y = (x − 3)(2x + 7) is written in standard form, what is the value of the coefficient "b"?

Answer 1

I already answered it..don't post the same question many times

Answer 2

\[y=(x-3)(2x+7)\]\[=(x\times2x)+(7x-3\times2x)-(3\times7)\]\[=(1\times2)x^2+(7-3\times2)x+(-3\times7)\]
\[y=ax^2+bx+c\]