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×-2 x-4
___ • ____
ײ-7×+ 12 ײ-5×+6​

Sagot :

Rumisaintidn

Answer:

1.) -x - 4

2.) 13x² - 12x + 6

Step-by-step explanation:

1. x - 2x -4

re-order and gather like terms.

(x - 2x) - 4

collect coefficients of like terms.

(1 - 2) × x - 4

calcuate the sum or difference.

2. x² - 7x + 12x² - 5x + 6

re-order and gather like terms.

(x² + 12x²) + ( –7x – 5x) + 6

collect coefficients of like terms.

(1 + 12)x² + (-7 - 5) × x + 6

calcuate the sum or difference.