Answer:
Step 2
Step-by-step explanation:
Susu is solving the quadratic equation by completing the square
To apply completing the square method we need to get x^2 alone
Susu added 13 on both sides . So step 1 is correct
When we factor out 4, we divide both terms by 4
Susu forgot to divide 8 by 4
So , error in step 2
Answer:
110
Step-by-step explanation:
Using the expansion
(a + b)³ = a³ + b³ + 3ab(a + b)
Given
x + = 5 ( cube both sides )
(x + )³ = 5³ = 125 ← expand left side using identity
x³ + + 3(x ×
)(x +
) = 125
x³ + + 3(1)(5) = 125
x³ + + 15 = 125 ( subtract 15 from both sides )
x³ + = 110
Answer:
From the given graph:
the coordinates of triangle RST are;
R= (2, 1),
S= (2,-2),
T= (-1,-2)
Given: Scale factor = and center of dilation at (2,2)
The mapping rule for the dilation applied to the triangle as shown below:
; where k represents the scale factor i.e,
or we can write it as ;
For R=(2, 1)
The image R' =
⇒ R'=
Similarly for S= (2, -2) and T= (-1,-2)
therefore, the image of S'=
⇒ S'=
The image of T' =
⇒T' =
Now, labelling the image of triangle R'S'T' as shown in the figure given below
