Foiling
What is Foiling?
First Outer Inner Last
k2-14k+49
(k-7)2
-5 (-p2+4)
5p2-20
1x1
3(3+3+3)
36
(2x+5) (3x-4)
6x2+7x-20
49z2-4
(7z+2) (7z-2)
-6(25x-4)
-150x+24
670x6748
4521160
12(-12+14+10)
144
5(s-1)(3s+7)
15s2+20s-35
25j4-9
(5j2+3)(5j2-3)
10(-13x-7)
130x-70
4382
191844
20p(10+2-19)
-140p
3(2s-5)(2s-1)
12s2-36s+15
49r2+84r+36
(7r+6)2
10p(6+7p)
60p+70p2
NO CALCULATORS!
24 X 69
1656
36(10x+13+22)
360x+1260
10(10x-1)
100x-10
3x3 - x2y +6x2y - 2xy2 + 3xy2 - y3
(3x-y)(x+y)2
15p2(3p+16)
45p3+240p2
NO CALCULATORS
1600 X 4
6400
31(31+45+77)
4743