a) Solve for x: 2x² + 5x = 3

b) Solve for x and y: x + y = 4 and x² + y² + xy - 12 =0
c) Solve for x: 8
2x + 3 = ½x²
d) Factorise: 6x² - 7xy - 3y²
e) Factorise: 4x³ + 5x²y - 4xy² - 5y³

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