It looks like you intend
x¹⁹ -2x¹⁸ +7x¹⁷ -12x¹⁶ +6x¹⁵ = 0
x¹⁵(x -1)²(x² +6) = 0
x = 0, 1, ±(√6)i . . . . . . . selection D is appropriate
Area of square is A1
A1=a^2
a=2m
A1=2^2
A1=4 m^2
Area of equilateral triangle is A2
A2=h•b/2
b=2 m
h= √3/2 •b
h= √3•2/2
h= √3
A2= √3 •2/2
A2= √3
Area of a shape A
A=A1-A2
A=4-√3
A=4-1.73
A=2.27 m^2
the amount of coats sold dosent affect the temperature so no Quincy didn't make a reliable claim
6-5x=3x
-5x-3=-6
-8=-6
x=-6/-8
= 3/4 or 0.75