Question

factorise 4²+4y-21 please help me to find the answer please please​

Answer 1

Step-by-step explanation:

iam not sure about this answer

Answer 2

Step-by-step explanation:

=> 4²+4y-21

=> (4×4) + ( 4×y) - ( 4 × 21/4 )

By taking 4 common from every bracket

=> 4 { (4) + (y) - (21/4) }

=> [ 4 ] [ 4+y-21/4]