√(50*15) *√60 = √(50*15 *60) =√(25*2*15 *15*4) =5*15*2√2 =150√2.
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√(50*15) *√60 = √(50*15 *60) =√(10*10*5*5*3*3*2) =10*5*3√2=150√2.
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√(50*15) *√60 =√(25*2*15) *√(15*4) =√25*√2*√15 *√15*√4 =5*√2*(√15)²*2 =5*2*15*√2=10*15 =150√2.
ответ :150√2.
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f(x - 5) =5^(10-x) .
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f(3) -?
f(x - 5) =5^(10-x) .
f(3) =f(8 - 5) =5^(10-8) =5² =25.
ответ :25.