Question

factorise 9x2+6x+1-25y2

Answer 1

9x^2+6x+1-25y^2

=(3x)^2+1+(2 X 3x X 1)-(5y)^2

=(3x+1)^2- (5y)^2

=(3x+1+5y)(3x+1-5y)

Answer 2

9x^2+6x+1-25y^2

=(3x)^2+1+(2 X 3x X 1)-(5y)^2

=(3x+1)^2- (5y)^2

=(3x+1+5y)(3x+1-5y)