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OLga [1]
3 years ago
12

Y=x^2+3x-7 y-5x+8=0 how many solutions are there

Mathematics
1 answer:
motikmotik3 years ago
7 0
X^2+3×-7=5x-8
X^2-2x+1=0
(X-1)(x-1)=0
X=1 x=1


Y=1^2+3*1-7
Y=1+3-7
Y=4-7
Y=-3


×=1 y=-3
Solution = (1,-3)
Answer= one solution
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Answer:

The solution for the system of equations is

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Explanation:

4x−3y=14.....equation (1)

y=−3x+4.....equation (2)

Solving by substitution

Substituting equation 2 in equation 1

4x−3⋅(−3x+4)=14

4x+9x−12=14

13x=14+12

13x=26

x=2

Finding y by substituting x in equation 1

4x−3y=14

4⋅2−3y=14

8−3y=14

8−14=3y

3y=−6

y=−2

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