Question

196x'²-56xy+4y'²,if x=1,y=2​

Answer 1

Good morning

196(1)

2

−56(1)(2)+4(2)

2

⇒196−112+16

⇒100.

I

Answer 2

Answer: 169(1) (2 is a square number) −56(1)(2)

−56(1)(2)+4(2) ( 2 is squarenumber)

=196−112+16

=196−112+16=100

=196−112+16=100