Question

11. Factorise 25x2 + 4y2 +972 - 20xy - 12yz + 30zx by using suitable identity.​

Answer 1

Answer:

(5x)

2

+(2y)

2

+(3z)

2

−2(5x)(2y)+2(2y)(3z)−2(3z)(5x)

=(5x−2y−3z)

2

Only x is negative.

=(−(−5x+2y+3z))

2

Or =(5x−2y−3z)

2

Step-by-step explanation:

I hope you understand then follow me