Since no more can be added or broken down
3x^2+5x-2 - 7-x^2+2x
Given the polynomials:
We have to perform the indicated operation Q - [R + S]
Combine like terms;
Therefore, Q - [R + S] is,
(D) 4x² +3x -9
Q -[R+S] =(3x²+5x - 2) -[(2 - x²)+(2x+5)] = (3x²+5x - 2) -[2 - x²+2x+5] =
(3x²+5x - 2) -[ - x²+2x+7] = 3x²+5x - 2+x² - 2x - 7 = 4x² +3x -9
D: 4x2+3x-9 is the answer
The answer is D, 4x² + 3x - 9, i took the test 14/14
s = 2x + 5
So plug in the values of q, r, and s into your equation q - [r+s], so
3x² + 5x -2 - [2-x² + 2x + 5], do the part in the brackets first
3x² + 5x -2 - [ -x² +2x +7], make sure the minus in front of the brackets is distributed to all the components
3x² + 5x -2 + x² -2x -7, then add/sub similar variables
4x² + 3x - 9, which is your answer, the last one...
option c) graph of line going through 1, 4 and 3, 10
let y equal to margo's coin collection
let x equal to number of years
at the begining x=0, y=1 → point=(x,y)→point=(0,1)
she adds 3 coins per year, then y=1+3x
at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)
at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)
the graph of line going through (1, 4) and (3, 10), then the option c is the correct.
a’b’ = 6, cd = 10
the scale factor is 1/2. multiply 12 by 1/2 to get 6 for a’b’.
to get cd, multiply 5 by 2 to get 10 for cd.