Question

4. Expand by using identity (x+4)2
5. Expand (2x+3y) by using suitable identity​

Answer 1

Step-by-step explanation:

$(x + y) {}^{2} = x {}^{2} + y {}^{2} + 2xy$

Hope, it helpful for you

Answer 2

Step-by-step explanation:

a + b whole square is equal to a square + b square + 2 ab