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solve 125^(1/3)*2^(-3)

To find 125 1/3 we have to solve x 3 = 125 => This gives x=5 Then we have 2 -3 is equal to 1/(2 3 ) => This is equal to 1/8So to answer the question we have 5*(1/8)=5/8
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Answered by Robbie R. • Maths tutor
4372 Views

solve x^3+2x^2+x=0

factorise x 3 +2x 2 +x=0 => x(x 2 +2x+1)=0 => x(x+1)(x+1)=0 => x(x+1) 2 =0 => This leads to x=0 and (x+1) 2 =0 so x=0 and x+1=0 => Giving us the answer x=0,-1
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Answered by Robbie R. • Maths tutor
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Using the sum, chain and product rules, differentiate the function f(x) = x^n +x^3 * sin(1/[3x])

The following function consists of the sum of two variables x^n and x^3 * sin(1/[3x]). Let's break the differentiation down term by term and differentiate x n first since it's the easier term. Recalling the ...
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Answered by Valeri S. • Maths tutor
3315 Views

Solve the following quadratic equation x^(2)+7x+12

(x+a)(x+b) = 0The two numbers must have a product of 12 and a sum of 7.3*4 = 12 AND 3+4=7Therefore(x+3)(x+4) = 0Therefore x+3 = 0 --> x = -3OR x+4 = 0 --> x = -4
MV
Answered by Michael V. • Maths tutor
3281 Views

How do I rewrite algebraic fractions as a single fraction?

The first step to writing an expression with more than one fraction as a single fraction is to find their lowest common denominator. For example, in a question with two fractions where the denominators are x...
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Answered by David O. • Maths tutor
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