Advertisements
Advertisements
Question
Solve the following quadratic equation by factorisation:
(x - 4) (x + 2) = 0
Advertisements
Solution
The given quadratic equation is
(x - 4) (x + 2) = 0
⇒ x - 4 = 0 or x + 2 = 0
⇒ x = {4, -2}.
RELATED QUESTIONS
Solve the following quadratic equations by factorization:
4x2 + 4bx – (a2 – b2) = 0
Solve the following quadratic equations by factorization:
x2 + 2ab = (2a + b)x
Solve each of the following equations by factorization:
`2x^2-1/2x=0`
The sum of the squares of two consecutive positive odd numbers is 514. Find the numbers.
A teacher on attempting to arrange the students for mass drill in the form of a solid square found that 24 students were left. When he increased the size of the square by one student, he found that he was short of 25 students. Find the number of students.
If the equation 9x2 + 6kx + 4 = 0 has equal roots, then the roots are both equal to
Solve the following equation: `"x"^2 - ( sqrt 2 + 1) "x" + sqrt 2 = 0 `
In each of the following determine whether the given values are solutions of the equation or not.
x2 + 6x + 5 = 0; x = -1, x = -5
Find two consecutive odd integers such that the sum of their squares is 394.
The lengths of the parallel sides of a trapezium are (x + 9) cm and (2x – 3) cm and the distance between them is (x + 4) cm. If its area is 540 cm2, find x.
