Select the correct answer. Consider this quadratic equation.
x+1=2x-3
Which expression correctly sets up the quadratic formula?
OA -(-2) V-2)2 - 4(1)(4)
2(1)
OB. -(-2) + V-2)2 – (1)(4)
2(2)
Oc. -2 = V(-2)2 – 4(1)(4)
2(1)
OD. -2 + (2)2 – 4(1)(-2)
2(1)

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation:

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.

so mark-up is 0.4 multiplied by 180 = 72