Question

هر (طل
(b) x² + 9y² - 6xy - 4z²​

Answer 1

Answer:

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

Step-by-step explanation:

x²+9y²-6xy-4z²

x²+(3y)²-2(x)(3y)-4z² {a²+b²-2ab=(a-b)²}

(x-3y)²-4z²

(x-3y)²-(2z)² {a²-b²=(a+b) (a-b)}

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

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