I need help finding the area of the polygons.

hope it helps

Step-by-step explanation:

1. area = 15*15 - 5*6 = 195

2. area = (8+16)*8 /2   -     5*3  =  96 - 15 = 81

3. area = 12*3 + 9 * (12 - 4 - 4) = 36 + 9*4 = 36+36 = 72

4. x = 6-3 = 3

   y = 3- (-1) = 4

   z = 7-3 = 4

area = 2*x*y/2 + y*z = 2*3*4/2 +4*4 = 12+16 = 28

don't know sorry bru

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb