Question: I could really use some help on this question! would be very grateful, thanks ! Question 4 17 marks You should use algebra in all

I could really use some help on this question! would be very grateful, thanks !

I could really use some help on this question! would be very

Question 4 17 marks You should use algebra in all parts of this question, showing your working clearly. (a) Solve the following equations, giving your answers as integers, fractions or surds in their simplest form. (i) 6m2=3:I:+1 [2] (ii) 10+ (37x) = %:z:+3 [3] 3m 2 = _ 4 (111) m4+:I:+1 3 [1 (b) Solve the equation 2m2 + 30:1: + 112 = 0 by factorisation. [3] (c) A student was asked to rearrange the formula 3 7 (I. + 1b 3b + C(2b 3) to make I) the subject, where 135 560 at 0. The student's incorrect attempt is shown below. 3 _ Z a + $10 3b +3 c(:2b3) 4o + 3b = 1:2b + %c(2b 3) 3ea + 27b = :Losb + 210(:2b 3) sea + 27b = 1osb + 42cc ego 3ea + 6230 = 1osb + 42km :27b {sea + 630 = 135b + 42bit uses + 630 = b(135 + 420) b _ sea + 6230 _ 128 + 210 135 + 4:20 495 + 140 (i) Write out a correct rearrangement of the formula. [3] (ii) Identify and explain, as if directly to the student, two of the three mistakes made by the student. [2]

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