The value of the radical expression -8 + √20 when expanded and solved is -3.6, based on the given parameters
<h3>What are equivalent
expressions?</h3>
Equivalent expressions are different expressions that have equal values when evaluated and compared
<h3>How to approximate the radical expression?</h3>
The expression is given as:
-8 + √20
The above expression is a radical expression
So, we start by doing the following
Express 20 as 5 * 4
-8 + √20 = -8 + √(5 * 4)
Split the radical expression √(5 * 4)
-8 + √20 = -8 + √5 * √4
Evaluate the square root of 4 i.e. √4 = 2
-8 + √20 = -8 + √5 * 2
This gives
-8 + √20 = -8 + 2√5
Evaluate the square root of 5
-8 + √20 = -8 + 2 * 2.2
Evaluate the product of 2 and 2.2
-8 + √20 = -8 + 4.4
Evaluate the difference
-8 + √20 = -3.6
Based on the given parameters, the value of the radical expression -8 + √20 when expanded and solved is -3.6
So, the complete equation is:
-8 + √20 = -3.6
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brainly.com/question/2972832
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