show that 5 is a zero of the polynomial 5x^2-26x+5
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5x^2 -26x + 5=0
Lets take the value of x be 5
=> 5×(5)^2 - 26×5 +5 =...
= 5×25 - 130 +5
= 125 - 125
= 0
Thus it is proved that 5 is a zero of the polynoial 5x^2 -26x + 5=0 .
Hope it helped...
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