Question

answer plssssssssssss​

Answer 1

Answer:

-5/3 and -3

Explanation:

3x^3+9x+5x+15 = 3x(x+3)+5(x+3)= (3x+5)(x+3) = x= -5/3 and -3

Answer 2

$\mathfrak{\bf{\underline{\underline{⍟Question \ :}}}}$

$\implies \: \: \: \: \mathsf{3 {x}^{2} + 14x + 15 = 0}$

$\mathfrak{\bf{\underline{\underline{⍟Solution \ :}}}}$

$\implies \: \mathsf{3 {x}^{2} + 14x + 15 = 0 }$

$\implies \: \mathsf{3 {x}^{2} + 9x + 5x + 15 = 0 }$

$\implies \: \: \mathsf{3x(x + 3) + 5(x + 3) = 0}$

$\implies \: \: \mathsf{x + 3 = 0}ㅤㅤㅤ \mathsf{OR}ㅤㅤ \mathsf{3x + 5 = 0}$

$\implies \: \: ㅤ \mathsf{x = - 3}ㅤㅤㅤ \mathsf{OR}ㅤㅤㅤ \mathsf{x = - \frac{5}{3} }$

$\mathfrak{\bf{\underline{\underline{\blue{⍟Answer \ :}}}}}$

$ㅤㅤ \underline{ \underline{\mathsf{\blue{x = - 3}}} }\: ㅤㅤ\: \underline{ \underline\mathsf{OR}}ㅤㅤㅤ\underline{ \underline{\blue{ x = - \frac{5}{3} }}}$