It is an expression that can be simplified to: 4x2-42
The expression cannot be factorised.
-59
An unnecessary one. 42 + 96 = 138
-147 - 42 + 3 = -186
36+8=44 49+42=91 Therefore,if both equations are not equivalent, then 36+8 doesn't equal 49+42
X = 6 5x + 2x = 42
42
42 is equivalent to 42/1.
6(x + 7) = 6x + 42
3 + 7 x 6 =3 + 42 = 45
42 + 42 = 84