Question

Find value of K if value of polynomial 4
${x}^{2}$
+ Kx – 40 at x = 5 is 25.
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Answer 1

Step-by-step explanation:

4(25) +k(5) -40 =0

100+5k -40=0

60+5k=0

5k=-60

k= -60/5

k = -12