book Maths Puzzle Numerical Ability

Multiply

-3a2</sup>b 14a3</sup>b2</sup>
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35a5</sup> -9b4</sup></PRE>

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book Other Question

Kelly and Chris are shopping in the city. Chris leaves for home in his car at 3:00 traveling at 48 mph, but Kelly is engrossed in a shoe store and doesn't leave until 3:15. If sh √4x^2+x-3=2x
how do i solve this equation?