Question

multiply (2y+3)×(4y-2) give answer in step by step ​

Answer 1

Answer:

Given:

(2y+3) × (4y-2)

= 8y²-4y +12y -6

=8y²+8y-6

If you want to find out the roots it will be :

8y²+8y-6

Here, a=8 , b=8 , c=-6

=-b±√b²-4ac/2a

=-8±√(8) ²-4(8) (-6) /2*8

=-8±√64+192/16

=-8±√256/16

=-8±√(16)²/16

=-8±16/16

so, y=-8+16/16 or y=-8-16/16

=8/16=1/2 y= -24/16 =-3/2

so , the required roots are (1/2) and( -3/2)