Question

if u answer me correctly then i will follow u and plz attach a image or explain perfectly​

Answer 1

Answer:

hey mate here's the ans

${x }^{2} + 7x + 12 = (x + 2)(x + 5) + k$

now we will multiply (X+2) and (X+5) so it become

${x}^{2} + 7x + 12 = ( {x}^{2} + 5x + 2x + 10) + k$

now we will add the like terms

${x}^{2} + 7x + 12 = {x}^{2} + 7x + 10 + k$

now transfering the like terms to other side it become

${x}^{2} - {x}^{2} + 7x - 7x + 12 - 10 = k$

here x^2 and 7x will be cancelled because of opposite signs. now the remaining part is

12-10=k

2=k

hence the value of k is 2

hope it helps u:)