If I am not mistaken, you cross multiply then divide.
x+y-z+w = 10--------(1)
x+3y-4z+5w=26------(2)
x+4y-7z+7w = 37-------(3)
x+2y-3z+6w = 22--------(4)
Subtract equation (1) from (2)
x+3y-4z+5w - (x+y-z+w) = 26 - 10
2y + -3z - 4w = 16-----------------------------(5)
Subtract equation (1) from (3)
Answer:
Option B.) –6x3 + x2 – √5
Step-by-step explanation:
A is wrong because, polynomial expressions cannot have a variable as a denominator.
C is wrong because there is no constant.
D is wrong because, polynomial expressions cannot have a variable as a denominator.
Hope that helps! :-)
Answer:
2 x − 5 = 7 2x-5=7 2x−5=7.
Step-by-step explanation:
Add 5 to both sides. Simplify 7 + 5 7+5 7+5 to 1 2 12 12. Divide both sides by 2.
