Question

Evaluate the expression when k = 3 and j = 10.

(5k−j)2+2k

Answer 1

Answer:

=16

Explanation:

(5k-j)2+2k

=(5(3)_10)2+2(3)

=(15_10)2+6

=(5)*2+6

=10+6

Answer 2

16

Explanation:

To evaluate an expression we need to substitute for k = 3 and j= 10 into the expression given

(5k − j) 2 + 2k

= (5*3 −10)*2 +2*3, see k write 3, see j write 10

= (15 -10)*2 + 6, multiply 5*3 and 2*3

= 5*2 + 6 , subtract the numbers in parenthesis (15-10)=5

= 10 + 6, multiply 5 and 2 first, then add 10 and 6

= 16