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86

54

Two plus 3 minus 2 times 1 squared plus 4 times 16 squared minus 4 times 2 is equal to 1,019.

simplify the square foor of 49 times x to the third time y to the sixth times the absolute value of z squared

6

+ times a + = a plus- times a + = a minus- times a - = a plus+ times a - = a minus

2a+5

2b

6xsquared minus 26x minus 5 over 3xsquared minus 15x

It could be: 34-(7*6)+8 = 0

plus or minus. You see it often with square roots. The square root of 9 is plus or minus 3.

Positive (Plus) times Negative (Minus) always equals a negative (minus).

3a - 2b

No, it becomes a plus, since minus x minus = plus

plus times plus = plus minus times plus = minus plus times minus = minus minus times minus = plus so when you subtract a number it is the same as adding its negative; for example 7 - 4 = 3 7 + (1)(-4) = 3

A plus times a plus is still a plus. Below is the way I remembered it: If there is not a minus sign, it is plus (positive). If there is 1 minus sign, it is minus (negative). If there are 2 minus signs, it is plus (positive).

a square minus b square

2a+6b

No

Yes it does. A minus is the opposite of something, so the minus of a minus is a plus.

8060 Source: calculator

This one's ugly.(5 times the square root of 23 minus 4it)(5 times the square root of 23 plus 4it)where i is the square root of negative one.

24

29.5

No, nor is it a real number. The square root of minus 54 is equal to the square root of plus 45, times i.