product
find sum of zeroes and
polynomial x² + 7x + 12.
of
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2 thoughts on “product<br />find sum of zeroes and<br />polynomial x² + 7x + 12.<br />of<br />​”

1. Answer:

   Let p(x) =x^2+7x+12

   =x^2+3x+4x+12

   =x(x+3)+4(x+3)

   =(x+3)(x+4)

   x+3=0 ; x+4=0

   x=-3 ; x=-4

   thus the zeroes of p(x) are -3 and -4

   So, sum of zeroes=-3+(-4)=-3-4=-7=-(-7)/1=-b/a

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2. Answer:

   Now, let’s solve it by splitting the middle term. Here, addition of 4x and 3x is 7x & Multiplication of 4x and 3x is 12 x²., which is correct. So, zeros are -4 and -3. We have quadratic polynomial = x² + 7x + 12.

   hope it helps

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