Question

=729

2. Be Precise Suri solved the equation x2 = 49
and found that x=7. What error did Suri
make? © MP.6
What is the answer

Answer 1

see below

Explanation:

x^2 = 49

Take the square root of each side

sqrt(x^2) =± sqrt(49)

x = ±7

Suri failed to take into account the negative value of the square root