book Maths Puzzle Numerical Ability

factor the quadratic expression completely, and find the roots of the expression.

49x^2 - 14x - 3

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book Other Question

solve y
2log(3,y) + log(3,0.1) = log(3,5) + log(3,2)
if you have a number like -.0456 and -.000456 does the place value change on the number line? example: -1. -.1000, -.100, -.10, 0, .10, .100, .1000, 1 or is it

-1. -.10, -.100,