Question

Answer 1

a) \(\left(3x+1\right)^2=9x^2+6x+1\)

b) \(=16+8x+x^2\)

c) \(=y^2+4xy+4x^2\)

d) \(=9y^2+6xy+x^2\)

e) \(=\dfrac{1}{4}x^2+\dfrac{2}{3}x+\dfrac{4}{9}\)

f) \(=x^2+x+\dfrac{1}{4}\)

g) \(=x^2+1+y^2+2x+2y+2xy\)

Answer 2

\(a,=9x^2+6x+1\\ b,=16+8x+x^2\\ c,=y^2+4xy+4x^2\\ d,=9y^2+6xy+x^2\\ e,=\dfrac{1}{4}x^2+\dfrac{2}{3}x+\dfrac{4}{9}\\ f,=x^2+x+\dfrac{1}{4}\\ g,=x^2+y^2+1+2xy+2x+2y\)