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Solve 7(x-5)=25-3x

Firstly, expand the left hand side of the equation out to produce: [7x-35=25-3x]. Bring all the x's to one side (to form 10x=60). Divide both sides by 10 to find the solution for x [x=60/10]. Therefore, x=6
JJ
Answered by Jenni J. • Maths tutor
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The equation 5x sqaured + px + q , where p and q are constants, has roots α and α + 4. (a) Show that p squared = 20q +400.

a+a+4 = -p/5a+2 = -p/10(a+2)sqaured = q/5 +4p sqaured/100 = q/5 +4p sqaured = 100(q/5 +4)implies p squared = 20q+400
AT
Answered by Ahmed T. • Maths tutor
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Write an introduction to a Philosophy and Ethics question

A good introduction provides clarity to the question and informs the reader to what is going to be argued.1.) An effective introduction immediately offers a clear judgement, this gives clarity to the main th...
JT
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Explain how to conjugate the conditional tense for regular verbs

The conditional tense is formed in two parts. For regular -ir and -er verbs, we use the infinitive as the stem. For regular verbs ending in -re we must first remove the "e" to create the stem. Once...
MJ
Answered by Miranda J. • French tutor
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Factorise (x^2-100) and then solve for x.

When looking at factorising quadratic equations, the first approach should be to identify what is in front of the x term and the value of the c term, with the equation being in the form of y=A(x^2)+Bx+c.So t...
SA
Answered by Syed A. • Maths tutor
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