If x = -7, then x3 = -343 so that 2x3 = -686 y = 2 then 15 y = 30 So 2x3 + 15y = -686 + 30 = -656
x = -7, y = 2 ⇒ 2x3 + 15y = 2 x (-7)3 + 15 x 2 = 2 x (-343) + 15 x 2 = -656
2x+3=9x-2x -2x3=7x/7 /73/7=x
4 equals 2x2, 6 equals 2x3
Not necessarily.
2x3 - 7 + 5x - x3 + 3x - x3 = 8x - 7
The multiples of 6 are: 6x1 and 2x3.
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(2x3)+(3x5)-(3x2)= 2x3=6 3x5=15 3x2=6 So..... 6x25-6= 6x25=150 150+6=156
your equation is this... 2x3 + 11x = 6x 2x3 + 5x = 0 x(2x2 + 5) = 0 x = 0 and (5/2)i and -(5/2)i
5-2x3=9