What grade r u in ( i´m boredd)
2 answers:
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The first step for solving this expression is to distribute 
through the first set of parenthesis.
× (x - 9)
Now use the FOIL method to multiply each term in the first parenthesis by each term in the second parenthesis. This will look like the following:
x × x - x × 9 - x - × (-9)
Remember that multiplying two negatives together equals a positive,, so the expression changes to:
x × x - x × 9 - x + × 9
Calculate the product of all of the sets of multiplication to make the expression become:
x² - 
x - x +
Lastly,, calculate the difference of -x - x to find your final answer.
x² - 
x +
Let me know if you have any further questions.
:)
Now use the FOIL method to multiply each term in the first parenthesis by each term in the second parenthesis. This will look like the following:
Remember that multiplying two negatives together equals a positive,, so the expression changes to:
Calculate the product of all of the sets of multiplication to make the expression become:
Lastly,, calculate the difference of -
Let me know if you have any further questions.
:)
Answer:
U₂₁ and U₂₂ fits in the line of upper triangular
Step-by-step explanation:
As explain in the question
An upper triangular matric is square matrix with all zeros below its daignal. A lower triangular matrix is a square matrix with all zeros above its diagonal.
(as shown in the attached image)
(a)for all 3×3 upper triangular matirices U, verify that U2 is also upper triangular
for a matrices U (having a 3*3 matrix), assuming for example, U is given below:
U =
the element in the upper triangular are 1,2,3,5,6,9 (U₁₁, U₁₂, U₁₃; , U₂₂, U₂₃, U₂₂)
while lower triangular are 0,0,0, the element in the lower triangular are (U₂₁, U₃₁,U₃₂)
U₂₁ and U₂₂ fits in the line of upper triangular
