Question

evaluate 100-(x-5)2​

Answer 1

Answer:

Step-by-step explanation:

100-(x^2+5^2-2×x×5)=0

100-x^2-25+10x=0

75-x^2+10x=0

-x^2+10x+75=0

-(x^2-10x-75)=0

x^2-10x-75=0

x^2+5x-15x-75=0

x(x+5)-15(x+5)=0

(x+5)(x-15)=0

x+5=0

x=-5

x-15=0

x=15