Question

Evaluate the expressions for the given value of the variable.
(a) 6y^4 - 5y^3 + 3y + 1 for y = -2
(b) -4y^2 + 5y - 3 for y = -3
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Answer 1

a) 6y⁴ - 5y³ + 3y + 1

At y = - 2

6 ( - 2 ) ⁴ - 5 ( - 2 ) ³ + 3 x - 2 + 1

6 x 16 - 5 x - 8 - 6 + 1

96 + 40 - 6 + 1

Answer ➡ 131

b) - 4y² + 5y - 3

At y = - 3

- 4 ( - 3 ) ² + 5 x - 3 - 3

- 36 - 15 - 3

Answer ➡ - 54