MU123 Maths

(iii) Simplify the surd 6v 7 + V54 42 by writing it as a surd in its simplest form, showing your working.(a) Simplify each of the following expressions as far as possible; multiply out any brackets, expand any algebraic fractions, and collect like terms together. Show your working. (i) 7(5 -9t) (ii) 9 + m(17 - 5m) - 17m (iii) 18t - 9(6s - 4t) (iv) 6p(9 + 7p2) - 7(4p - 10 + 5p3) (v) 7x2 + 21x - 35 7x (b) Solve the following equations. Show your working and check that your answers are correct. (i) 12a - 14 = 6 + 7a (ii) -5 =3(y - 7)