While I'm a little confused on what is closed and open parenthesis/brackets, I think I understand what you mean. In (5x^2+3x-2)+(3x-2x+5), the brackets can simply be removed as there is no multiplication between them. This means we get 5x^2 + 3x - 2 + 3x - 2x + 5. Combining like variables, we get 5x^2 + 4x + 3.

6 0

2 years ago

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Determine the intercepts of the line.<br> D<br> y= –2x – 21<br> X-intercept:<br> y-intercept:

Andrews [41]

The x intercept would be -2
and the y intercept would be 21

4 0

2 years ago

(1+sinx/cos^2x) = tan^2x + 1 + tanxsecx

mr_godi [17]

#ANSWER#

(1+sinx/cos²x) =tan²x+1+tanx . secx

-> [(1+sinx/cos²x)] = 1/cos²x+sinx/
-> cos²x

-> = sec²x+tan x sec x
-> =tan²x+1+tanx secx

6 0

2 years ago