Question

Simplify the below algebraic expression and obtain its value for y = −1


4y(2y − 6) – 3(y − 2) + 20​

Answer 1

Answer:

4y(2y-6)-3(y-2)+20

4y×2y -4y×6 -3×y+3×2 +20

8y^2 -24y-3y+6+20

8y^2-27y+26

when y=-1

then

8(-1)^2 -27(-1) +26

8+27+26

61