Question

If x=3,y=5 then
a)(x+y)²=what?
b)Find the value of (x+y)²+(x-y)²÷4
c)Show that ,y²-x²=(x+y)(y-x)​

Answer 1

Answer:

a) 64 b) 65

Step-by-step explanation:

RHS,

(x+y) (y-x)

(y+ x)(y-x) x+ y = y+x

y^2 - x^2

hence proved

Answer 2

Answer:

a)64

b)17

c)16=16

Step-by-step explanation:

x=3

y=5

then,

(3+5)²=63