Answer:

Step-by-step explanation:
Given

Required
Express as a standard polynomial
We have:

Rewrite as:

Open bracket

Add like terms

Answer:
x=67.4
Step-by-step explanation:
well sin30:1/2
So y is not 30 since 5/13 doesn’t equal 1/2
So it’s either the the third or fourth option
And x>y
So option 4 is correct
To multiply fracti0ons, we need to convert them to improper fractions:
-2 1/4 = -9/4
-4 1/2 = -9/2
Now, lets multiply:
-9/4 * -9/2 = 81/8
Hope this helps!
Take note that the answer is positive because when multiplying, two negatives make a positive.
Wanna show a picture first
I don't know 1 but 2 can be 2.3 over 4.5 I think sorry if it's wrong but I hope it helps