Question

[hehehe]

a)                 (75 + 79).(54 + 56).(33.3 – 92)

b)                [(52.23) – 72.2) : 2].6 – 7.25

Answer 1

[ILoveMath]

a) \(\left(7^5+7^9\right)\left(5^4+5^6\right)\left(3^3.3-9^2\right)=\left(7^5+7^9\right)\left(5^4+5^6\right)\left[3^4-\left(3^2\right)^2\right]=\left(7^5+7^9\right)\left(5^4+5^6\right)\left(3^4-3^4\right)=\left(7^5+7^9\right)\left(5^4+5^6\right).0=0\)

Answer 2

[diệp anh nguyễn]

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