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Factorise f(x)=3x^3+8x^2-20x-16 completely

First we need to use the factor theorem to find a factor.f(1)=-25 so x-1 is not a factorf(-1)=9 so x+1 is not a factorf(2)=0 so x-2 is a factorSo x-2 is our starting point, we need to polynomial division f(x...
LB
Answered by Luke B. • Maths tutor
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Solve the following simultaneous equations 7x - 6y =38 and 3x + 9y =-3

To solve these equations you first want to eliminate the same variable from each equation. In this question it is easiest to eliminate Y, to do this we will times equation 1 by 3 to get 21X-18Y=114 and equat...
IR
Answered by Isabelle R. • Maths tutor
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Examine the ways in which Henry VII responded to the problem of his consolidation of power in the years 1485 to 1490, and whether or not he was successful.

In order the understand Henry's technique in consolidating his power along with his level of success it must first be understood why this was such a big issue for him by considering the problems he faced. Ev...
KJ
Answered by Kate J. • History tutor
5781 Views

In terms of electrons, what happens when magnesium atoms react with oxygen atoms to produce magnesium oxide?

Magnesium loses two electrons which are transferred to the oxygen atom (so oxygen gains two electrons). In this way, both magnesium and oxygen will acheive a stable full outer shell of electrons. The electro...
RK
Answered by Reka K. • Chemistry tutor
20526 Views

How do I form regular superlative phrases and what is the difference between that and a comparative adjective?

A superlative is an adjective that takes a comparison to the highest or lowest degree and it compares 3 or more nouns. However, a comparative adjective is one that describes the difference between 2 nouns.To...
CV
Answered by Carla V. • Spanish tutor
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