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Polynomials, SMB-017

Sketch  `y=-(x+2)(x-1)^2` on the graph below, clearly showing all intercepts.  (3 marks)
 

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`xtext{-axis intercepts at}\ \ x=-2 and 1\ text{(touches only)}`

`ytext{-intercept when}\ \ x=0\ \ =>\ \ y=-2xx(-1)^2=-2`
 

Filed Under: Polynomials Tagged With: num-title-ct-patha, smc-4242-30-Graphs

Polynomials, SMB-016

Sketch  `y=(x+2)^2(2x-1)` on the graph below, clearly showing all intercepts .  (3 marks)
 

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`xtext{-axis intercepts at}\ \ x=-2\ text{(touches only) and}\ 1/2`

`ytext{-intercept when}\ x=0\ \ =>\ \ y=2^2(-1)=-4`
 

Filed Under: Polynomials Tagged With: num-title-ct-patha, smc-4242-30-Graphs

Polynomials, SMB-015

Sketch  `y=(x+1)^2(x-3)` on the graph below, clearly showing all intercepts .  (3 marks)
 

 

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`xtext{-axis intercepts at}\ \ x=-1\ text{(touches only) and}\ 3`

`ytext{-intercept when}\ x=0\ \ =>\ \ y=1^2(-3)=-3`
 

Filed Under: Polynomials Tagged With: num-title-ct-patha, smc-4242-30-Graphs

Polynomials, SMB-014

Sketch  `y=x(x-2)(x+3)` on the graph below, clearly showing all intercepts .  (3 marks)

 

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`xtext{-axis intercepts at}\ \ x=-3, 0 and 2`

`ytext{-intercept at}\ (0,0)`

`text{At}\ \ x=1\ \ =>\ \ y=-4`
  

Filed Under: Polynomials Tagged With: num-title-ct-patha, smc-4242-30-Graphs

Polynomials, SMB-013

Sketch  `y=(x+1)(x+2)(x-1)` on the graph below, clearly showing all intercepts .  (3 marks)

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`xtext{-axis intercepts at}\ \ x=-2, -1 and 1`

`ytext{-intercept when}\ \ x=0\ \ =>\ \  y=1xx2xx-1=-2`
  

Filed Under: Polynomials Tagged With: num-title-ct-patha, smc-4242-30-Graphs

Functions, 2ADV F1 2021 HSC 8 MC

The graph of  `y = f(x)`  is shown.

Which of the following could be the equation of this graph?

  1. `y = (1 - x)(2 + x)^3`
  2. `y = (x + 1)(x - 2)^3`
  3. `y = (x + 1)(2 - x)^3`
  4. `y = (x - 1)(2 + x)^3`
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`C`

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`text(By elimination:)`

`text(A single negative root occurs when)\ \ x =–1`

`->\ text(Eliminate A and D)`

`text(When)\ \ x = 0, \ y > 0`

`->\ text(Eliminate B)`

`=> C`

Filed Under: Quadratics and Cubic Functions (Adv-2027), Quadratics and Cubic Functions (Y11) Tagged With: Band 4, num-title-ct-patha, num-title-qs-hsc, smc-4242-30-Graphs, smc-6215-50-Cubics, smc-6215-70-Graphs, smc-984-20-Cubics, smc-984-30-Graphs

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