factorise :9x²-(3y+z)²
Answers
Answered by
7
(9x + 3y + z)(9x - 3y - z)
Step-by-step explanation:
according to (a+b)(a-b) = a² - b²
9x²-(3y+z)²
= [(9x + (3y + z)][(9x - (3y + z)]
= (9x + 3y + z)(9x - 3y - z)
Answered by
0
Answer:
(3x-3y-z)(3x+3y+z)
Step-by-step explanation:
9x^2-(3y+z)^2= (3x)^2-(3y+z)^2
= (3x-3y-z)(3x+3y+x)
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