Answer:
-40
Explanation:
Given
u = 2i - j; v= -5i + 4j and w = j
Required
4u(v-w)
4u = 4(2i) = 8i
v - w = -5i + 4j - j
v - w = -5i + 3j
Substitute
4u(v-w)
= 8i(-5i+3j)
= -40(i*i) [since i*i = 1]
= -40
Hence the required solution is -40
Answer:
2x * (9 + 5x^2)
Step-by-step explanation:
Answer:
(-4 , -3)
Step-by-step explanation:
(x value, y value)
You always count the x value first, and in this case you have to go to -4.
(-4 , y value)
then, you determine the y value, which in this case is -3.
So, your answer is:
(-4 , -3).
Hope this helps!! Have a great day!! ~Carley
Answer:
-32
Step-by-step explanation:
3*8=24
-7*8=-56
-56+24=-32