What is 9-4[5^2-(7-4)^2] ?

The solution to 9-4[5^2-(7-4)^2] is -55

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9-4[5^2-(7-4)^2]

9 - 4 [5^{2} - (7 - 4)^{2}]

- 55

Solution steps

9 - 4 [5^{2} - (7 - 4)^{2}]

Follow the PEMDAS order of operations

Calculate within parentheses

[5^{2} - (7 - 4)^{2}] : 16

= 9 - 4 \cdot 16

Multiply and divide (left to right)

4 \cdot 16 : 64

= 9 - 64

Add and subtract (left to right)

9 - 64 : - 55

= - 55

\frac{( 5 ab ) ^{3}}{30 a ^{- 6} b ^{- 7}}

(\frac{2 a}{t ^{2}})^{- 2}

9 n + 13 = 3 n + 62.2

\frac{2}{3} x^{2} - \frac{1}{2} x - \frac{3}{4} = 0

(\frac{5}{13})^{2}