Answer:
a. at -1 & 2
Step-by-step explanation:
The given function is
.
Equate the function to zero.
.
Factor by grouping;
Factor further;
Apply the zero product property;
Solve for x;
![\Rightarrow x=2,x=\sqrt[3]{-1}](https://tex.z-dn.net/?f=%5CRightarrow%20x%3D2%2Cx%3D%5Csqrt%5B3%5D%7B-1%7D)
Answer:
4√3 + 13√5
Step-by-step explanation:
11√5 + 4√3 + √20. ,(20= 2√5)
= 11√5 + 4√3 + 2√5
= 4√3 + 13√5
Answer:
Area = 3x² + 7x + 3
Perimeter = 8x + 8
Step-by-step explanation:
The figure can be decomposed into two: a large rectangle and a smaller rectangle.
✍️Dimensions of the large rectangle:
Length = (x + 1) + x = x + 1 + x = (2x + 1)
Width = (x + 3)
Area = length × width
Area = (2x + 1)(x + 3)
Expand
2x(x + 3) +1(x + 3)
2x² + 6x + x + 3
Area = 2x² + 7x + 3
✍️Dimensions of the large rectangle:
Length = x
Width = x
Area = length × width
Area = x × x = x²
✍️Area of the figure = area of the large rectangle + area of the smaller rectangle
Area of the figure = (2x² + 7x + 3) + x²
Area of the figure = 2x² + x² + 7x + 3
✅Area = 3x² + 7x + 3
✍️ Perimeter of the figure = sum of the length of all sides of the figure = (x + 3) + x + x + x + (x + 1) + (x + 3) + (x + 1) + x
✅Perimeter = 8x + 8
Answer:
Step-by-step explanation:
3n+4<19
3n<19-4
3n<15
n<5
combining
(-∞,-16)U(16/9,5)
Answer:
Positive
Step-by-step explanation:
Looking for - r/2
Having that negative in front is basically saying
-1 * r/2
Based on where r is it is negative.
-1 × -r thus making the answer going to be positive due to negative × negative = positive
