21. 3x + 4 = x2 How would I solve this using the quadratic equation

Mathematics

1 answer:

hodyreva [135]3 years ago

4 0

Answer:

old

Step-by-step explanation:

idk because I'm just to pit down this because we haven't learned this yet

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X + 2y = 7<br> 3x - 2y = -3

VladimirAG [237]

Use Subtraction

1. Subtract
x+2y=7
3x-2y=-3
-------------
4x+0y=4 SIMPLIFY 4x=4

2. DIVIDE

4x=4
x=1

Substitute that into either of the original equations to get x=1, y=3

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$\rm - \dfrac{11}{2}$

Step-by-step explanation:

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