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Marielle Hane

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โˆ™ 2021-03-01 15:12:31
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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โˆ™ 2010-03-01 23:50:02

Let the numbers be a,b : Then ab = -30 and b = -30/a : Substituting in a + b = 7 gives :-

a + (-30/a) = 7 : a - 30/a = 7 : multiplying all terms by a :-

a2 - 30 = 7a : a2 - 7a - 30 = 0

Solving for the roots of a quadratic equation.

a = {7 ± √(72 - [4 x -30])} ÷ 2 = 3.5 ± 6.5

Then a = 10 (3.5 + 6.5) and b = -3 (3.5 - 6.5)

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Francesca Legon

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โˆ™ 2022-11-30 02:48:14

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Q: Find two numbers whose sum is 7 and product is -30?
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