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3 years ago

What is the value of the expression when x = 4? 8x^2 + 3x

Mathematics

1 answer:

tamaranim1 [39]3 years ago

7 0

Answer:

The value of the expression at x = 4 is 140

Step-by-step explanation:

<em>Let us solve the question</em>

∵ The expression is 8x² + 3x

∵ x = 4

→ To find the value of the expression at x = 4 substitute x by 4 in

the expression, then calculate the value of it

∵ The value of the expression = 8(4)² + 3(4)

→ Solve the power first

∴ The value of the expression = 8(16) + 3(4)

→ Simplify each term using multiplication

∴ The value of the expression = 128 + 12

→ Add the terms

∴ The value of the expression = 140

∴ The value of the expression at x = 4 is 140

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