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What is x²-3x+8 if x=4
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2 votes
What is x²-3x+8 if x=4

User Cantordust
by
4.0k points

2 Answers

5 votes

Answer:

12

Explanation:

Substitute x = 4 into the expression

4² - 3(4) + 8 = 16 - 12 + 8 = 12

User Prakash Vishwakarma
by
4.3k points
3 votes

Answer:

12

Explanation:

x²-3x+8

Plug in:

(4)²-3(4)+8

Use PEMDAS:

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

(4)²-3(4)+8

16 - 3(4) + 8

16 - 12 + 8

4 + 8

12

Hope this helped.

User Mehrdadep
by
3.5k points
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