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Solve the simultaneous equations 3x + 2y = 4 and 4x + 5y = 17

3x + 2y = 4 (equation 1) 4x + 5y = 17 (equation 2) Multiply equation 1 by 2.5, giving 7.5x + 5y = 10 (equation 1) 4x + 5y = 17 (equation 2) Subtract equation 2 from equation 1, giving 3.5x = -7 Therefore, x ...
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Answered by Isabella G. • Maths tutor
4600 Views

Factorise the following expression: x^2-1

(x+1)(x-1)
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Answered by Nelson T. • Maths tutor
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Could you please go through an example question where you have to solve quadratic simultaneous equations?

Of course - let's solve this question: Question: Solve the following quadratic simultaneous equations (1) 2x + y = 4 - x (2) y 2 + 4x = 12 Answer: a) Let us start by re-arranging the first equation: 2x + y =...
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Answered by Akhil S. • Maths tutor
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What are cadences?

Within Western music, the chords composers use in their compositions help give different musical effects. Cadences are chords progressions, and each cadence creates a different musical sound. The most common...
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Answered by Dany B. • Music tutor
10157 Views

Solve the equation x ^2>=3(x + 6)

1. Begin by mulitplying out the bracket on the right hand side of the equation. x^2=3x+18 2. Now move all of the terms of the equation onto one side by subtracting them x^2-3x-18=0 3. The quadratic equation ...
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Answered by Brad T. • Maths tutor
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