Question

for what value of a is the equation (x-5)^2=(x+5)^2-ax an identity.

Answer 1

Answer:

2(x+1)

2x+2

2

=2x+2

=2x+2

=2.

Answer 2

Answer:

(x-5)^2=(x+5)^2-ax

ax=(x+5)^2-(x-5)^2

=x^2+25+10x-x^2-25+10x

=20x

a=20