What is 3-5\times (-2)+8 ?

The solution to 3-5\times (-2)+8 is 21

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3-5\times (-2)+8

3 - 5 \cdot (- 2) + 8

21

Solution steps

3 - 5 (- 2) + 8

Follow the PEMDAS order of operations

Multiply and divide (left to right)

5 (- 2) : - 10

5 (- 2)

Apply rule

a \cdot (- b) = - a \cdot b

5 (- 2) = - 5 \cdot 2 = - 10

= - 10

= 3 - (- 10) + 8

Add and subtract (left to right)

3 - (- 10) + 8 : 21

3 - (- 10) + 8

Apply rule

- (- a) = + a

- (- 10) = + 10

= 3 + 10 + 8

3 + 10 = 13

= 13 + 8

13 + 8 = 21

= 21

= 21

(99)^{2} + 2 \times 99 + 1

- 7 - (- 4 + 3)

6 + 20 \div 4 - 3 \times 3 + 4

(- 2) \times (- 2) \times (- 2)

100 \times 6^{2} - 1200 \times 6 + 4000