Question

What is the value of the coefficient of "a" when the quadratic equation y = (5x − 2)(2x + 3) is written in standard form?

−11

−6

7

10

Answer 1

y = (5x − 2)(2x + 3)
\[\huge y = (5x − 2)(2x + 3)\]
\[\huge \rightarrow y = 10x^2 + 15x -4x -6\]
\[\huge \rightarrow y = 10x^2 + 11x -6\] comparing it with \[\huge y = ax^2 + bx +c\]
we find a= 10
Thus last option is correct answer.

Answer 2

Thanks!!!