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Jessica solved the radical equation √a+4 = 7. Her math work is shown in the table.
0 0.0 0
Step
√a+4=7
Given
Step 1 (√a+4)² = (7)² Square both sides
Step 2a +4=14
Simplify
Step 3a +4-4=14-4 Subtract 4 from both sides
Step 4a = 10
Simplify
Step 5√10+4+7
Check for extraneous solutions
In which step did Jessica make her first error?
a Step 1
C
Justification
Step
2
Step 3
Step 5

Jessica solved the radical equation a4 7 Her math work is shown in the table 0 00 0 Step a47 Given Step 1 a4 7 Square both sides Step 2a 414 Simplify Step 3a 44 class=

Respuesta :

Jessica made her first error in step 2.

What is an expression?

An expression is a combination of some mathematical symbol such that arithmetic operator and variable such that all are constrained and create an equation.

In other meaning, expression is very useful to determine the end or root value of constraint.

For example 3x +5y

The constraint of expression is represented as = or <, >.

Given 1, √(a+4) = 7

step 1 ⇒ square both sides

√(a+4)² = 7²

Step 2 ⇒ simplify

a + 4 = 49 but Jessica wrote 14 instant of 49.

Hence "Jessica made her first error in step 2".

To learn more about expression,

https://brainly.com/question/14083225

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