Question

10. If (x + y) = (a + ib), prove that
) a că => = 4(a2-63).
y​

Answer 1

Step-by-step explanation:

x+iy=a−iba+ib

⇒(x+iy)(x−iy)=(a−ib)(a+ib)×(a+ib)(a−ib)

⇒x2−(iy)2=a2−(ib)2a2−(ib)2

⇒x2+y2=a2+b2a2+b2=1.