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Mathematics 17 Online
OpenStudy (anonymous):

Solve 2^x + 3 = 7

OpenStudy (anonymous):

Subtract 3 both the sides first and tell me what did you get ??

OpenStudy (anonymous):

2^x = 4

OpenStudy (anonymous):

Yes.. Now 4 can be written as : \(2^2\): \[\large 2^x = 2^2\] can you find x from here ??

OpenStudy (anonymous):

2?

OpenStudy (anonymous):

Remember: Bases are same so powers must be equal..

OpenStudy (anonymous):

I dont' know

OpenStudy (anonymous):

Yes well done..

OpenStudy (anonymous):

What you don't know..?? You are right..

OpenStudy (mathteacher1729):

Sometimes it helps to translate the math symbols into English sentences: "2^x = 4" is saying "Two raised to what power equals four?" Do you know the powers of two? (two to the first power = ___ , two to the second power = ... etc.?)

OpenStudy (shaik0124):

x=2 is answerr

OpenStudy (anonymous):

\[\large a^x = a^y \implies x = y\]

OpenStudy (shaik0124):

bcoz there is a property that when bases are equal then exponents will b equal so x=2

OpenStudy (anonymous):

Did you get @Katiebae

OpenStudy (shaik0124):

hope she might have understood

OpenStudy (anonymous):

Yeah that is why she is not replying..

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