Answer:
2/5
Step-by-step explanation:
A +b = 90c = 1/2(86)=43
a + b + c = 133
Uh you need to upload the pick.
Answer:
y = 3
Step-by-step explanation:
2x+6y=5x+4y if x=2
2(2)+6y=5(2)+4y
4+6y=10+4y
-4 =-4
6y=6+4y
-4y= -4y
2y=6
/2=/2
y=3
Answer:
x² - 4 x + 3
Step-by-step explanation:
given expression
( x - ( 2 + i ) )( x - ( 2 - i ) )
on solving
= x² - (2 - i )x - (2 + i) x + (2 + i )(2 - i)
= x² - 2 x + i x - 2 x - i x + 2² - i²
using identity
(a+ b)(a-b) = a² - b²
= x² - 4 x + 2 - (-1) ∵ i² = -1
= x² - 4 x + 2 + 1
= x² - 4 x + 3
hence, the required polynomial equation is x² - 4 x + 3
