Find the value of the expression 4a^4 - 2b^2 + 40 when a = 2 and b = 7

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Mathematics

22 July, 14:05

Find the value of the expression 4a^4 - 2b^2 + 40 when a = 2 and b = 7

+1

Answers (2)

Know the Answer?

Skye · Answer 1

Answer:6

Step-by-step explanation:

4 (2) ^4 - 2 (7) ^2 + 40

4 (16) - 2 (7) ^2+40

64-2 (49) + 40

64-98+40

-34+40

6

Rex Rich · Answer 2

6

Step-by-step explanation:

4a^4 - 2b^2 + 40

Put a = 2 and b = 7

4 (2) ^4 - 2 (7) ^2 + 40

Solve the powers first.

4 (16) - 2 (49) + 40

Multiply.

64 - 98 + 40

Add and subtract.

= 6