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    I'm having one of those days where my basic maths skills has gone missing, i just wanted to ask, does 𝑥 x 3𝑥 ½ = 3𝑥?

    and does 3𝑥½ x 3𝑥½ = 9𝑥?

    Thank you
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    (Original post by meediaabid)
    I'm having one of those days where my basic maths skills has gone missing, i just wanted to ask, does 𝑥 x 3𝑥 ½ = 3𝑥?

    and does 3𝑥½ x 3𝑥½ = 9𝑥?

    Thank you
    Remember the law of indices, x^a+x^b=x^{a+b}

    So x \times 3x^{\frac{1}{2}} = 3x^{\frac{3}{2}} (1+\frac{1}{2}=\frac{3}{2})! However, your second one is right.
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    (Original post by Plagioclase)
    Remember the law of indices, x^a+x^b=x^{a+b}

    So x \times 3x^{\frac{1}{2}} = 3x^{\frac{3}{2}} (1+\frac{1}{2}=\frac{3}{2})! However, your second one is right.
    thank you very much!
 
 
 

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