You multiply each term by each term when expanding double brackets, so:
-2x × 9x = -18x^2
-2x × -3y = 6xy
8y × 9x = 72xy
8y × -3y = -24y^2
Now you combine the like terms to get
-18x^2 + 78xy - 24y^2
I hope this helps!
Answer:
Step-by-step explanation:
1. 30 degrees (vertical angles)
2. 60 degrees (complementary angles)
3. 150 degrees (supplementary angles and vertical angles)
4. 90 degrees (complementary angles)
Answer:
A. The function is linear and is growing by equal differences over equal intervals.
The Answer is 872 because you add both miles together.