factoring
5x2+ 15x4
5x2(1+3x2)
-10+(-9)
-19
15
x+5=12
x=7
74
7x7x7x7
4a3-2a5
2a3(2-a2)
10*(9)
90
square root of 16
4
2x=18
x=9
58
5x5x5x5x5x5x5x5
10x2y-20x
10x(xy-2)
-10-(-9)
-1
square root of 100
10
3x+4=19
x=5
107
10x10x10x10x10x10x10
5x+10
5(x+2)
-7-(-3)
-4
square root of 144
12
5x-7=28
x=7
44
4x4x4x4
2(x2+4x)
2x2+8x
-18-(9)
-27
square root of 36
6
4x+6=2x+16
x=5
39
3x3x3x3x3x3x3x3x3