Need help on this question, The expression (2x+1)^2 -2(2x^2 -1) 1) 4x+3
2) 3x+3
3) 3
4) -1

1) 4x+3

Step-by-step explanation:

(2x+1)²-2(2x²-1)

((2x)²+2•2x+1)-(2•2x²-2)

(2²•x²+4x+1)-(4x²-2)

answer:

it will cost 480 dollars to refurbish the larger wood floor

step-by-step explanation:

as it's a ratio of 4 that costs 384 dollars, divide the price by the ratio

384 / 4 = 96 dollars

96 dollars per unit of the ratio

now to get the price to refurbish the larger wood floor, times the price by the units

96 * 5 = 480

-6 is the correct option from the above given options