Can anyone give guidance and point me in the right direction for this problem? I've tried a couple approaches that have lead to dead ends and am not sure what to do. Thanks.
Can anyone give guidance and point me in the right direction for this problem? I've tried a couple approaches that have lead to dead ends and am not sure what to do. Thanks.
(SqRT(10x+9)-SqRT(79))/x-7
Limit x->7
start by multiplying the numerator and denominator by $\displaystyle \sqrt{10x+9} + \sqrt{79}$