Question

1 Subtract and simplify.

Answer 1

1. y^2 - 3y - 5 - (-y^2 - 7y + 4) = y^2 - 3y - 5 + y^2 + 7y - 4 =
    2y^2 + 4y - 9 <===

2. 6xy^3z * 3x^2yx^2 = 18x^5y^4z

3. -3x^3(-2x^2 + 4x - 3) = 6x^5 - 12x^4 + 9x^3

4. (6p + 2)^2 = (6p + 2)(6p + 2) = 36p^2 + 12p + 12p + 4 = 
    36p^2 + 24p + 4.....coefficient is 24

5. (x - 5)(x^2 - 2x - 6) = x(x^2 - 2x - 6) - 5(x^2 - 2x - 6) =
     x^3 - 2x^2 - 6x - 5x^2 + 10x + 30 =
     x^3 - 7x^2 + 4x + 30 <===