Question

hey guys plzz answer fast step by step
1) Expand (2x+3y-5z)^2​

Answer 1

Answer:

by using identity

[(a+b+c)^2= ( a^2 +b^2 +c^2 + 2*(a)*(b) + 2*(b)*(c) + 2*(c)*(a) ]

=(2x+3y+5z) ^2

=(2x)^ 2 +(3y) ^2 +(5z)^ 2 +2(2x)(3y)+2(3y)(5z)+2(5z)(2x)

=4x ^2 +9y^ 2 +25z^ 2 +12xy+30yz+20zx

Step-by-step explanation:

hope this would be helpful to you

Answer 2

Step-by-step explanation:

given =(2x+3y-5z)^2

by using identity (a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ac

here a=2x,b=3y,c=(-5z)

now let us solve it( solved in given image)

HOPE THIS IS HELPFULL