Question

(3х – у — 4) (3х – у + 5).​

Answer 1

Answer:

6x-2y+1

Step-by-step explanation:

because the added to same x ya y

Answer 2

Answer:

(3x -y -4)(3x-y+5)

3x(3x-y+5)-y(3x-y+5)-4(3x-y+5)

9x2-3xy +15x-3xy+y2-5y -12x+4y-20

9x2 +y2 -3xy-3xy+15x-12x-5y+4y-20

9x2+y2+6xy+3x-y-20

see 9x2 and y2 are the powers of x and y

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