Answer:
Explanation:
Use the Pythagorean Theorem to determine the roots
k = 1,-10/7
7k^2+3k-10 = 7(k-1)(k+10/7) = (k-1)(7k+10)
7k² + 3k - 10
= 7k² + ( 10 - 7 ) k - 10
= 7k² + 10k - 7k - 10
= k( 7k + 10 ) - 1( 7k + 10)
= ( 7k + 10) ( k - 1)
Hope it will help :)
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