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Answer:
D
Step-by-step explanation:
well the anser has to equal 9 if you solved the question correctly BUT the other questions have to equal 9 so the first one is like this
(3*2-2)+(5*2+5*-1)
= (6-2)+(5*2+5*-1)
= (4)+(5*2+5*-1)
= 4+(5*2+5*-1)
= 4+(10+5*-1)
= 4+(10+-5)
= 4+(10-5)
= 4+(5)
= 4+5
= 9
Now the answers A is not it because
8*2+5*-3
= 16+5*-3
= 16+-15
= 16-15
= 1
B isnt it because
8*2+5*-1
= 16+5*-1
= 16+-5
= 16-5
= 11
And C isnt it because
2*2+5*-3
= 4+5*-3
= 4+-15
= 4-15
= -11
So that leaves D and this is how it is correct
= 8*2+7*-1
= 16+7*-1
= 16+-7
= 16-7
= 9
Hope this helps! Sorry I took so long
To find roots of a polynomial, you have to find numbers that when you multiply will equal 5 (because 5*1) and add to -5. since the only factors of 5 are 1 & 5, they do not equal -5. you will have to use the quadratic formula to find the roots. if you want decimals, they are 0.723607 & 0.276393
Answer:
So what do you need help in plz
