Question

3x-2=14-x then find 'x'​

Answer 1

Answer:

x=4

Step-by-step explanation:

I hope it helps you

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Answer 2

Step-by-step explanation:

Answer

Let y=

x

2

+2x+3

x

2

+14x+9

.

⇒y(x

2

+2x+3)=x

2

+14x+9

⇒(y−1)x

2

+2(y−7)x+3y−9=0

Since, x is real, so discriminant of above equation will be greater than or equal to 0.

D≥0

⇒4(y−7)

2

−4(y−1)(3y−9)≥0

⇒(y−7)

2

−(y−1)(3y−9)≥0

⇒y

2

+49−14y−3(y

2

−4y+3)≥0

⇒−2y

2

−2y+40≥0

⇒y

2

+y−20≤0

⇒y

2

+5y−4y−20≤0

⇒y(y+5)−4(y+5)≤0

⇒(y+5)(y−4)≤0

⇒y∈[−5,4]

So, the maximum value of y is 4 and minimum value of y is -4 I HOPE IT'S HELPFUL YA MARK M BRAINLEST PLZ PLEASE