Question

25-12х+(х-5)*(х+5)-(5-х)^2

Answer 1

$25-12x+(x-5)* (x+5)^{2} \ 25-12x+(x-5)*(25+10x+ x^{2} ) \ 25-12x+25x+10 x^{2} + x^{3} -125+50x+ x^{2} \ -100+63x+11 x^{2} + x^{3}\63x+11 x^{2} + x^{3} =100$