What is 3(7)^2-30(7)+72 ?

The solution to 3(7)^2-30(7)+72 is 9

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3(7)^2-30(7)+72

3 (7)^{2} - 30 (7) + 72

9

Solution steps

3 (7)^{2} - 30 (7) + 72

Follow the PEMDAS order of operations

Calculate exponents

(7)^{2} : 49

(7)^{2}

(7)^{2} = 49

= 49

= 3 \cdot 49 - 30 (7) + 72

Multiply and divide (left to right)

3 \cdot 49 : 147

3 \cdot 49

3 \cdot 49 = 147

= 147

= 147 - 30 (7) + 72

Multiply and divide (left to right)

30 (7) : 210

30 (7)

Apply rule:

(a) = a

(7) = 7

= 30 \cdot 7

Multiply the numbers:

30 \cdot 7 = 210

= 210

= 147 - 210 + 72

Add and subtract (left to right)

147 - 210 + 72 : 9

147 - 210 + 72

147 - 210 = - 63

= - 63 + 72

- 63 + 72 = 9

= 9

= 9

2 \cdot 2 - 4

1 4^{2} + 6^{2}

2 \cdot 5 + 2

(- 1)^{4} - 3 (- 1)^{3} - 4

4 - 2 (3 + 7)