Question

solve the following equation and check the result of 4(x-1)-(2x-5)=4​

Answer 1

Value of x...

• 4(x-1) - (2x-5) = 4
• 4x - 4 - 2x - 5 = 4
• 2x - 9 = 4
• 2x = 4 + 9
• 2x = 13
• x = 13/2

Checking the result...

• 4(13/2 - 1) - (2*13/2 - 5) = 4
• 26 - 4 - 13 - 5 = 4
• 26 - 22 = 4
• 4 = 4

hence, proved...

Answer 2

EXPLANATION.

Equation : 4(x - 1) - (2x - 5) = 4.

As we know that,

We can write equation as,

⇒ 4x - 4 - (2x - 5) = 4.

⇒ 4x - 4 - 2x + 5 = 4.

⇒ 2x - 4 + 5 = 4.

⇒ 2x + 1 = 4.

⇒ 2x = 4 - 1.

⇒ 2x = 3.

⇒ x = 3/2.

                                                                                                                   

MORE INFORMATION.

Nature of the roots of quadratic expression.

(1) Roots are real and unequal, if b² - 4ac > 0.

(2) Roots are rational and different, if b² - 4ac is a perfect square.

(3) Roots are real and equal, if b² - 4ac = 0.

(4) If D < 0 Roots are imaginary and unequal Or complex conjugate.