Question

Jaleel and Lisa are simplifying the expression 2 (x minus 2) + 2 as shown. Jaleel's Method 2 (x minus 2) + 2 = 2 x minus 4 + 2 = 2 x minus 2 Lisa's Method 2 (x minus 2) + 2 = 2 x minus 2 + 2 = 2 x

Answer 1

Answer:

Jaleel is correct

Explanation:

Given

$2(x - 2) + 2$

Jaleel

$2(x - 2) + 2 = 2x - 4 + 2 = 2x - 2$

Lisa

$2(x - 2) + 2 = 2x - 2 + 2 = 2x$

Required

Who is correct

Analyzing the solutions

For, Jaleel; we have:

$2(x - 2) + 2 = 2x - 4 +2$ --- this is correct

$2(x - 2) + 2 = 2x - 2$ --- this is correct

For Lisa, we have:

$2(x - 2) + 2 = 2x - 2+2$ --- this is incorrect because:

$2(x - 2) + 2 \ne 2x - 2+2$

Hence, Jaleel is correct