Question

simpilfy(4x3-12x2+4x-7)+(-3x3+11x2-5x-6)-(7x2+3x2-6x+7)​

Answer 1

Answer:

(4x2 - 2x) - (-5x2 - 8x)

= 4x2 - 2x + 5x2 + 8x.

= 4x2 + 5x2 - 2x + 8x.

= 9x2 + 6x.

= 3x(3x + 2).

Answer: 3x(3x + 2)

2. Simplify: (-7x2 - 3x) - (4x2 - x)

Solution:

(-7x2 - 3x) - (4x2 - x)

= -7x2 - 3x - 4x2 + x

= -7x2 - 4x2 - 3x + x

= -11x2 – 2x

= -x(11x + 2)

Answer: -x(11x + 2)

3. Simplify: (-5x2 - 8x + 7) - (5x2 - 4)

Solution:

(-5x2 - 8x + 7) - (5x2 - 4)

= -5x2 - 8x + 7 - 5x2 + 4

= -5x2 - 5x2 - 8x + 7 + 4

= -10x2 – 8x + 11

Answer: -10x2 – 8x + 11

4. Simplify: (4x2 + 5x) + (x2 - 5x + 1)

Solution:

(4x2 + 5x) + (x2 - 5x + 1)

= 4x2 + 5x + x2 - 5x + 1

= 4x2 + x2+ 5x - 5x + 1

= 5x2 + 0 + 1

= 5x2 + 1

Answer: 5x2 + 1