Question

Find the wrong step.
The problem is 7 * square root of 425
Step 1: 7(squareroot of 400 + square root of 25)
Step 2: 7(20+5)
Step 3: 7(25)
Step 4: 175

Answer 1

Rewrite the wrong step

Answer 2

step 1 is wrong

Answer 3

Step 1:

7( sqrt(400) + sqrt(25) ) = 175

Answer 4

so what should step 1 be?

Answer 5

H\[\sqrt{a+b}~≠~\sqrt{a}+\sqrt{b}\]