Question

Pls help solve this question as soon as possible

Answer 1

Step-by-step explanation:

1) (4x+y)^2=(4x)^2+2*4x*y+y^2

=16x^2+8xy+y^2

2) (5a+3b)^2=(5a)^2+2*5a*3b+(3b)^2

=25a^2+30ab+9b^2

3) (2x+1/x)^2=(2x)^2+2*(2x)*(1/x)+(1/x)^2

=4x^2+4+1/x^2

=4x^2+4+(1/x^2)

Answer 2

Answer:

Step-by-step explanation:

$(4x+y)^{2} = (4x)^{2} +2(4x)y+y^{2}$

$=16x^{2} +8xy+y^{2}$

$(5a+3b)^{2} =(5a)^{2} +2(5a)(3b)+(3b)^{2}$

$=25a^{2} +30ab+9b^{2}$

$(2x+1/x)^{2} =(2x)^{2} +2(2x)(1/x)+(1/x)^{2}$

$=4x^{2} +4+1/x^{2}$