Question

if a =2x4+8x2-10,x=4 x 4+16 x 2-20 then a+b​

Answer 1

Answer:

55 + b

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Answer 2

a = 2×4 + 8×2 - 10

= 8 + 16 -20

= 24 - 20

= 4

x = 4 × 4 + 16 × 2 - 20

= 16 + 32 - 20

= 48 - 20

= 28

x = a + b

28 = 4 + b

28 - 4 = b

24 = b

Therefore,

a+b

4 + 24

28