Question

Find the value of the polynomial 2y²-3y-4 at y=5

Answer 1

Putting y=5
=2ysquare-3y-4
=2(5) square - 3(5) -4
=50-15-4
=31

Answer 2

y=5
putting the value of y in the equation
2(5)^2-3(5)-4
=2(25)-15-4
=50-15-4
=50-19
=31