Question

12. Factorize the given expression: 9x ^ 2 + 49y ^ 2 + 25z ^ 2 - 42xy - 30xz + 70yz​

Answer 1

Answer:

I have send answer in photo please check it

Answer 2

Step-by-step explanation:

the question should be

9x²+49y²-42xy-30xz+70yz + 25z²

if so then...

(3x)² + (7y)² + (5z)² - 2(3x)(7y) -(2)(3x)(5z) + (2)(7y)(5z)

as the negative sign is with x variable, therefore

=> (-3x)² + (7y)² + (5z)² + 2(-3x)(7y) + (2)(-3x)(5z) + (2)(7y)(5z)

= (-3x+7y+5z) (-3x +7y +5z)

Hope it's help..