What is -3(-8)^2-(-8)-15 ?

The solution to -3(-8)^2-(-8)-15 is -199

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-3(-8)^2-(-8)-15

- 3 (- 8)^{2} - (- 8) - 15

- 199

Solution steps

- 3 (- 8)^{2} - (- 8) - 15

Follow the PEMDAS order of operations

Calculate exponents

(- 8)^{2} : 64

(- 8)^{2}

Apply exponent rule:

(- a)^{n} = a^{n},

n

is even

(- 8)^{2} = 8^{2} = 64

= 64

= - 3 \cdot 64 - (- 8) - 15

Multiply and divide (left to right)

- 3 \cdot 64 : - 192

- 3 \cdot 64

- 3 \cdot 64 = - 192

= - 192

= - 192 - (- 8) - 15

Add and subtract (left to right)

- 192 - (- 8) - 15 : - 199

- 192 - (- 8) - 15

Apply rule

- (- a) = + a

- (- 8) = + 8

= - 192 + 8 - 15

- 192 + 8 = - 184

= - 184 - 15

- 184 - 15 = - 199

= - 199

= - 199

\frac{1}{4} - 1 + 1

2 + (5 - 2) \times 5

6 (4)^{2} - 6 (4) - 36

1 + (- 12) + 7

[- (- 5) - 3 (4 - 7)] [3 + (5 - 2)]