1.

7r^2+28r-3300=0Factorise

Answer»

5x2 + 330x + -3300 = 0 Reorder the terms: -3300 + 330x + 5x2 = 0 SOLVING -3300 + 330x + 5x2 = 0 Solving for variable 'X'. Factor out the Greatest Common Factor (GCF), '5'. 5(-660 + 66X + X2) = 0



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