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It is: (-4)^2 +(-4) -9 = 3 when x is equal to -4
2/3
It is an algebraic expression, if there are numbers and variables. For example: 2x + 2 = 4x(7-5) 20-29 = -9/3x If there are ONLY numbers and NO variables, it is called an arithmetic expression. For example: 3+3+3+3 = 4+4+4 2+6 = 4+4
3/4 is equal to 0.75 in decimal form.
If you mean subtracting a negative number from another negative, then you simply add the second negative to the first number. For example: -3 - (-4)=1 -3 + 4 = 1 The double negative makes the equation an addition.