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Find whether x=5 is the root …

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Find whether x=5 is the root of the equation x² -13x +40=0

Posted by Punit Patil 4 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Tanvi @1201 4 years, 3 months ago

p(x)=x²-13x+40=0 P(5)=5²-13×5+40=0 =25-65+40=0 =-40+40=0 =0=0 Thus,it is the root of the equation.

1Thank You

Aastha Jha 4 years, 3 months ago

If x= 5 is the root of the equation x² - 13x +40 , then the value of whole equation should be 0....So, Let x=5, then, (5)² - 13*5 + 40 = 0 25-65+40 =0 25-25=0 0=0 Hence, x=5 is the root of the equation.

0Thank You

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Posted by Hari Anand 2 weeks, 5 days ago

CBSE > Class 10 > Mathematics