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Need help please! (1 Viewer)

ObninbO

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could you please help me with the atached questions. plase show working out if possible.

thanks:ninja:
 

ObninbO

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2011
yeh thanks, i wasnt sure which ones you subsitute in, like which way around you put them in. Thanks
 
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for question 2 it's the same.
you just substitute.
so you write [root (2--5) square the answer to this and ADD that answer to (-4-3) squared.
so 2--5 squared is 49 ADD -4-3 squared, which is 49.
49 + 49 = 98
then root 98 to get your answer.
 

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