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Question

Solve the following quadratic equation by factorization, whole no root is:
7x+3x=3535

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Solution

7x+3x=3535
7x+3x=1785
35x2+15=178x
35x2178x+15=0
35x2175x3x+15=0
35x(x5)3(x5)=0
(x5)(35x3)=0
x5=0 and 35x3=0
x=5 and x=335
Here, we can see whole number root is 5.

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