book Maths Puzzle Numerical Ability



Find the domain of

y = 5x2 – 14x – 10







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book Other Question

sole the following word problem by using the system linear equation in two variables:

one number is 3 more than the second number. twice the first is 9 less than 3 times the second
V=AR+W For V
AR+W is over 2


I am into this part. I am totally clueless how to manipulate formulas. In general, I c