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Here are the first four terms of a quadratic sequence: 11 26 45 68. Work out an expression for the nth term.

Firstly we must count the values between each of the terms to find the first differences. (EG- 26-11=15, 1st differences: 15,19,23)Next we need to count the values between each of the first differences to...

DC
Answered by Daniel C. Maths tutor
13789 Views

What is the general rule for forming the present subjunctive in French?

Firstly, take the present, third person plural conjugation of the verb, e.g. prendre > prennent, donner > donnent, finir > finissent. Next, subtract the 'ent' from the end, e.g. prennent > pre...

AD
Answered by Amy D. French tutor
1574 Views

Solve the equation (3x**2 + 8x + 4) = 0

x = -2 x = -2/3

TP
Answered by Tamsin P. Maths tutor
3165 Views

Solve 8p = 24

In order to get p on its own, it is necessary to move it over to the right hand side of the equation. When moving something from one side to another, you flip the sign. For example, in this case, it is 8*...

ST
Answered by Sebastian T. Maths tutor
5098 Views

Solve the simultaneous equations: 5x + y = 21, x - 3y = 9

Two equations 1) 5x + y = 21, 2) x - 3y = 9. Eliminate x or y by manipulating equations 1 or 2. Equation 3 = equation 2 x 5 = 5(x-3y) = 5(9) 3) 5x - 15y = 45. Equations 3 & 1 both have 5x's so we can ...

JL
Answered by Jason L. Maths tutor
3129 Views

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