Question

what's the amount of x ?​

Answer 1

Answer:

2x×(x+1) = -5

2x²+2x = -5

2x² = -5-2x

x²= -5-2x/2

x=

$\sqrt{ ( - 5 - 2x \div 2)}$

hope it helps

Answer 2

Answer:

x = -2

Step-by-step explanation:

q^(x)*2 x q^x+1 = q^-5

now we know that,

if the bases are same then the powers are added (in case of multiplication between two variables )

that is,

(q)^(2x + x+1) = q^(-5)

( 2x because if a power has a power in it then it will be multiplied)

now, when same bases are there in both sides then we will have equal powers that is,

2x +x+1 = -5

3x+1=-5

3x = -6

x= -2

hope it helps you