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Please help on these hard maths questions!! watch

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    Ignore my writing.. Attachment 727498
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    Can you see it now
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    (Original post by Randomstudwnt)
    Can you see it now
    Nope, sorry man. Try linking it to another site? Or upload a picture?
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    (Original post by Randomstudwnt)
    Can you see it now
    I can see it on my phone app only. I can say now, to simplify the expression in the second question all you need to do is use conjugate multiplication.
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    What's that😩😂
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    (Original post by Randomstudwnt)
    What's that😩😂
    Ok, before the conjugate multiplication you can express sqrt of 8 in terms of sqrt of 2. (sqrt of 8 = sqrt of 2*4 = sqrt 2 * sqrt 4)

    Multiplying by the conjugate basically means that you multiply both the numerator and denominator with the conjugate of the square root expression. In this instance, you want to multiply with the conjugate of (sqrt2 - 1), which is basically just (sqrt2 + 1). This way you simplify everything so that you no longer have a square root expression in the denominator.
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Updated: February 25, 2018
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