Find the errors and correct the given expression.
$(z + 5)^{2} = z^{2} + 25$

(2 z) = z^{2} + 10 z + 25

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(z + 5) = z^{2} + 10 z + 25

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(z + 5)^{2} = z^{2} + 10 z + 25

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(z + 10)^{2} = z + 10 - 5

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Solution

The correct option is D $(z + 5)^{2} = z^{2} + 10 z + 25$
LH.S= $(z + 5)^{2} = z^{2} + 2 (z) (5) + 5^{2} . . . . . . . . . . . . . . . . . . . . . [(a + b)^{2} = a^{2} + 2 a b + b^{2}]$
$= z^{2} + 10 z + 25 \neq$ R.H.S

The correct option is C.

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Similar questions

z^{2} - 10 z + 25 = 9

z

(z + 5)^{2} = z^{2} + 25

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

(z + 5)^{2} = z^{2} + 25

(z + 5)^{2} = z^{2} + 25

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