Question

Where does the graph of y = 2x2 + x − 15 cross the x-axis?

Answer 1

2*2+x-15 or (2x)2+x-15?

Answer 2

This is when its y-value equals 0, so solve: (2x-5)(x+3)=0, so it will cross at -3 and \(\tfrac{5}{2}\).

Answer 3

(0,-11) if (2*2)+x-15 is the equation