Question

factorise x square plus 3x plus 4​

Answer 1

Answer:

x^2 + 3x - 4

=x^2 + 4x - x - 4

=x(x + 4) - 1(x + 4)

=(x - 1)(x + 4)

Step-by-step explanation:

Answer 2

Answer:

x^2 + 3x +4

D=b^2-4ac

D= 9-16

D=-7

we have quadratic formula:

x=-b+-√D/2a

square root can not be negative

therefore no roots exists

hope it will help you....

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