Geometry
posted by Stephanie .
How do you do the problem 4k+7(42k)=2(k2)
Please help me I keep trying and can't get the right answer thankssteph

if you're trying to find the value of k which satisfies the equation, just unwind the expressions.
remove parentheses:
4k+7(42k)=2(k2)
4k  28  14k = 2k + 4
Now combine terms:
10k  28 = 2k + 4
Now move all the "k" stuff to one side and the numbers to the other:
8k+2k = 4 + 28
Combine terms again:
8k = 32
Divide by the coefficient of k:
k = 4 
Thank you so much