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Damm
2 months ago
10

Solve the system. x + y = 8 2x2 – y = –5 Add the equations, then choose the result. 3x2 = –13 3x2 = 3 2x2 + x = 3 2x2 = –13

Mathematics
2 answers:
Zina [12.3K]2 months ago
6 0

Conclusion:

Option 3 is the correct choice

2x^2+x=3

Here’s a breakdown of the steps:

Let's solve the equation system:

x+y = 8....[1]

2x^2-y = -5....[2]

we can express equation [2] in a different form:

y= 2x^2+5

By substituting y's value into equation [1], we have;

x+2x^2+5 = 8

Next, we subtract 5 from both sides;

x+2x^2=3

or

2x^2+x=3

Consequently, the outcome we achieve is 2x^2+x=3

tester [12.3K]2 months ago
6 0
2x^2 - y = -5
     x + y = 8
----------------adding gives us
2x^2 + x = 3 <==

** It's important to note that 2x^2 and x cannot be combined, because they are not like terms.
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