Question

21.
Find the solution of the quadratic equation x2-b2-a(2x-a).​ please help fast

Answer 1

Answer:

x^2-b^2-2ax-a^2

Step-by-step explanation:

just open the bracket

Answer 2

Answer:

X^2-b^2-a(2x-a)

X^2-b^2-2ax+a^2

X^2-2ax+a^2-b^2

D=b^2-4ac

D=(-2a)^2-4(1)(a^2-b^2)

D=4a^2-4a^2+4b^2

D=4b^2