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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

X²-20x+a=(x-b)² ⇒x²-20x-a=x²+b²-2bx ⇒x²-x²-20x-a=b²-2bx ⇒b²-2bx+20x-a=0 ⇒b²-x(2b-20)-a=0 for this quadratic equation: Discriminant D= B²-4AC And A=1'B=2b-20;C=-a Then; (2b-20)²4a=0 ⇒b²+100-20b-a=0 ⇒10²+b(b+20)-a=0 Now again for the quadratic equation th Discriminant D=B²-4AC B=10,A=1,C=-a So (b+20)²+4a=0 If i will type the complete solution it will go very long. The value of a =12 and The value of b=-8