1) De la suma de x 2 + 5 con 2x – 6 restar la suma de x - 4 con x + 6 2) Restar la suma de 3x 2 – y 2 con -11xy + 9y 2 – 14 de la suma de x 2 - 3xy – y 2 con 9y 2 – 8xy + 19x 2
3) Multiplicar a 3 – 3a 2 b + 4ab 2 por a 2 b – 2ab 2 -10b 3
4) Dividir x 6 + 6x 3 – 2x 5 – 7x 2 – 4x + 6 entre x 4 – 3x 2 + 2

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

the answer is a if my teacher taught me correct