Question

I always get lost when I have to split bigger number can anyone help me..
for eg: x²+x-210=0

Answer 1

Given Equation is x^2 + x - 210 = 0.

It can be written as:

= > x^2 + (15 - 14)x - 210 = 0

= > x^2 + 15x - 14x - 210 = 0

= > x(x + 15) - 14(x + 15) = 0

= > (x - 14)(x + 15) = 0

= > x = 14,-15.

Hope this helps!

Answer 2

here you go ☆☆

if there's big no. then u can apply this formula...

here,
a= 1 , b = 1, c = -210

${b}^{2} - 4ac$

1^2 - 4 × 1 × -210
1 + 840
841

now,

▪$x = \frac{ - b( + - ) \sqrt{ {b}^{2} - 4ac } }{2a}$

▪$\frac{ - 1( + - ) \sqrt{841} }{2}$

▪$\frac{ - 1 + 29}{2} .. \frac{ - 1 - 29}{2}$

▪$\frac{28}{2} .. \frac{ - 30}{2}$

hence
x= 14
x= -15

hope it helps you......