The factorisation of y^2 - 7y + 12 is: - Vidyadip

MCQ

The factorisation of $y^2 - 7y + 12$ is:

A
$(y + 3) (y + 4)$
B
$(y + 3) (y - 4)$
C
$(y - 3) (y + 4)$
✓
$(y - 3) (y - 4)$

✓

Answer

Correct option: D.

$(y - 3) (y - 4)$

$= y^2 - 7y + 12$
$= y^2 - 3y - 4y + 12$
$= y(y - 3) - 4(y - 3)$
$= (y - 3) (y - 4)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 Marks Each]" from Factorization→Factorization — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Which of the following are like terms?

The angle sum of a convex polygon with number of sides $10$ is:

$x$ and $y$ vary inversely with each other. If $x – 15$ when $y = 6$, then the value of $x$ when $y = 15$ is

An electric pole, $14$ metres high, casts a shadow of $10$ metres. What will be the height of a tree that casts a shadow of $15$ metres under similar conditions?

The volume of a cube is $343\ cm^3$. Its total surface area is :

A four-digit number aabb is divisible by $55.$ Then possible value $(s)$ of $b$ is/are

The volume of a room is $80m^3.$ The area of the floor is $20m^2.$ The height of the room is:

The reciprocal of $\frac{1}{\text{x}}(\text{x}\neq0)$ is:

The ratio of $50$ paise to $Rs. 1$ is:

The value of $x$ for which the expressions $(3 x-4)$ and $(2 x+1)$ become equal is