Factorise: (ax+by)^2+(bx-ay)^2
Answers
Answered by
16
(ax+by)²+(bx-ay)²
= (ax)² + (by)² + (abxy) + (ay)² + (bx)² - (abxy)
= (ax)² + (by)² + (ay)² + (bx)²
= (a² + b²)(x² + y²)
= (ax)² + (by)² + (abxy) + (ay)² + (bx)² - (abxy)
= (ax)² + (by)² + (ay)² + (bx)²
= (a² + b²)(x² + y²)
Similar questions