What is -(-7)^2+7(-7)+9 ?

The solution to -(-7)^2+7(-7)+9 is -89

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-(-7)^2+7(-7)+9

- (- 7)^{2} + 7 (- 7) + 9

- 89

Solution steps

- (- 7)^{2} + 7 (- 7) + 9

Follow the PEMDAS order of operations

Calculate exponents

(- 7)^{2} : 49

(- 7)^{2}

Apply exponent rule:

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

n

is even

(- 7)^{2} = 7^{2} = 49

= 49

= - 49 + 7 (- 7) + 9

Multiply and divide (left to right)

7 (- 7) : - 49

7 (- 7)

Apply rule

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

7 (- 7) = - 7 \cdot 7 = - 49

= - 49

= - 49 - 49 + 9

Add and subtract (left to right)

- 49 - 49 + 9 : - 89

- 49 - 49 + 9

- 49 - 49 = - 98

= - 98 + 9

- 98 + 9 = - 89

= - 89

= - 89

[63 - (165 \div 5)] + [53 + (62 + 25)]

12 \div 2 \times 6 + 4 - 3

2 + 1^{5}

(5 \times 21) \div 31

3 (- 4)^{2} (- 1) - 5 (- 4) + (- 4) (- 1)^{2}