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A day full of math games & activities. Find one near you.

Find and correct the errors in the statement: (z + 5)2 = z2 + 25

Solution:

An equation is a mathematical statement with an 'equal to' symbol between two algebraic expressions that have equal values.

Given,

(z + 5)2 = z2 + 25

Solving LHS we get,

(z + 5)2

= (z)2 + 2(z)(5) + (5)2 [Using identity (a + b)2 = a2 + 2ab + b2]

= z2 + 10z + 25

But, RHS is given as z2 + 25

Thus, L.H.S ≠ R.H.S

The correct statement is (z + 5)2 = z2 + 10z + 25

☛ Check: Class 8 Maths NCERT Solutions Chapter 14

Video Solution:

Find and correct the errors in the statement: (z + 5)² = z² + 25

Class 8 Maths NCERT Solutions Chapter 14 Exercise 14.4 Question 12

Summary:

Find and correct the errors in the statement: (z + 5)2 = z2 + 25. The correct statement is (z + 5)2 = z2 + 10z + 25

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