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Find the Maximum Point of this curve - -X^2 -7X -20
(-7/2,-31/4)
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Vishvan N.
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Solve the quadratic equation 3x^2 + x – 5 = 0 give answers to 3 decimal places
Clare buys some shares for $50x. Later, she sells the shares for $(600 + 5x). She makes a profit of x% (a) Show that x^2 + 90x − 1200 = 0
Solve the simultaneous equations: 3x+7y=18 and x+2y=5
Work out: 20% of 12000
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