Simplify: (x^2+2x-1)-(x+1)

x^2+x-2

this is the answer bc the 2nd parentheses is being multiplied by the negative  sign meaning you need to subtract it from the 1st parentheses.

x² + x - 2

Step-by-step explanation:

Simplify the following:

(x² + 2x - 1) - (x + 1)

-(x + 1) = -x - 1:

x² + 2x - 1 - x - 1

Grouping like terms,

x² + 2x - 1 - x - 1 = x² + (2x - x) + (-1 - 1):

x² + (2x - x) + (-1 - 1)

2x - x = x:

x² + x + (-1 - 1)

-1 - 1 = -2:

x² + x - 2

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values