Question:
Factorise:
3x2 + 10x + 8
Solution:
The given expression is $3 x^{2}+10 x+8$.
Find two numbers that follow the conditions given below:
Sum $=10$
Product $=3 \times 8=24$
Clearly, the numbers are 6 and 4 .
$3 x^{2}+10 x+8=3 x^{2}+10 x+8$
$=3 x^{2}+6 x+4 x+8$
$=3 x(x+2)+4(x+2)$
$=(x+2)(3 x+4)$
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.