Answer:The first one should be it Dont trust me
Step-by-step explanation:
 
        
                    
             
        
        
        
7x^2 + x -6 
 You just have to add the same terms x squared + x squared and so on
        
             
        
        
        
Answer:
The answer is D
Step-by-step explanation:
Hope this helps UwU
 
        
                    
             
        
        
        
Answer:
y = -29/19  and x = -44/19
Step-by-step explanation:
3x + 2y = -10    multiply by -2  ⇔    -6x -  4y = 20
2x - 5y = 3       multiply by 3   ⇔    <u>  6x - 15y = 9    </u>
 Add the two equation                             -19y = 29
                                                                        y =  -29/19
Use equation one and solve for x
3x + 2(-29/19) = -10
3x - 58/19 = -10
 3x = -10 + 58/19
 3x = -190/19 + 58/19 
 3x = (-190 + 58)/19
   3x = -132/19
     x =  - 132/ 19 ÷3                           
     x =  -44/19