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Lorico [155]
3 years ago
15

Which of the following is equivalent to the expression (3x² + 2x-8)-(2x² - 4x + 7)?

Mathematics
1 answer:
mihalych1998 [28]3 years ago
6 0

Answer: x^2+6x-15

Step-by-step explanation:

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If p, q are zeroes of polynomial f(x) =2x^2-7x+3,find the value of p^2+q^2​
Elza [17]

Answer:

p^2 + q^2 = 22/9.

Step-by-step explanation:

For a quadratic function ax^2 + bx + c if the zeroes are A and B then

A + B = -b/a and AB =  c/a.

2x^2 - 7x + 3

Now p and q are the zeroes of the above function so

p + q =  7/3 and pq = 3/2.

Now p^2 + q^2 = (p + q)^2 - 2pq

= (7/3)^2 - 2* 3/2

=  49/9 - 3

= 49/4 -  27/9

= 22/9.

4 0
3 years ago
How many elements must a set have if the number of proper subsets of the set is one half of the total number of subsets of the​
lora16 [44]
The set  X = { x , {x} }  would, I think,  fit the Bill
So its 2 elements
6 0
3 years ago
What is g(3) when g(x) = 4x^2-3x+7
Misha Larkins [42]

Answer:

34

Step-by-step explanation:

g(x) = 4x^2 - 3x + 7

g(3) = 4(3)^2 - 3(3) + 7

g(3) = 4(9) - 9 + 7

g(3) = 36 - 9 + 7

g(3) = 27 + 7

g(3) = 34

Best of Luck!

5 0
3 years ago
I need help asap!!!!!
ycow [4]
It equals to 2 because 3 times -4 is -12 and -12 divided by -6 is 2
5 0
3 years ago
Can someone help? exams are tomorrow and i have no clue how to do this problem?
cluponka [151]
Hi i don’t really know the answer but i just wanted to say good luck on ur exams and you will do great!!
5 0
2 years ago
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