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Chapter 10: Q 215 (page 1235)

Solve quadratic equation by using square root propertym2-40=0

Short Answer

Expert verified

The required result ism=210or-210.

Step by step solution

01

Given information 

The given expression ism2-40=0.

02

Square Root Property 

Add 40 both side of the equation

m2+40-40=0+40

m2=40

If x2=kand k≥0then, x=kor-k

40≥0

x=40or-40

x=210or-210

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