Solve 5x^2 - 4x - 3 =0. Give answers to 3 significant figures

1.27 and -0.472

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Answered by Marcus J. Maths tutor

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How do I expand double brackets?


How do I solve simultaenous equations? e.g. 2x -5y =11 and 3x+2y=7


Make r the subject of the formula: 1/r -1/p = 1/t


Insert one pair of brackets so that this calculation is correct; 3 x 6 + 5 - 1 = 32


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