Question

5. Find the product of (2y+6)(2y+7).​

Answer 1

Answer:

4y² + 26y + 42

Step-by-step explanation:

( 2y + 6 ) ( 2y + 7 )

= ( 2y )² + ( 6 + 7 )2y + ( 6 ) ( 7 )

= 4y² + 26y + 42

Answer 2

Step-by-step explanation:

(2y+6)(2y+7)

2y(2y+7)+6(2y+6)

4y²+14y+12y+36

4y²+26y+36= 0

by factorisation method,

4y²+18y+8y+36 =0

2y(2y+9)+4(2y+9)=0

2y + 4 =0 or 2y+9=0

2y=-4 or 2y=-9

y=-2 or y= -9/2

hope u understand