Simplify the expression (2x^2+6x−7)−(3x^2+3x−1)+(x−8)

= - x^2 + 4x  - 14

Step-by-step explanation:

(2x^2+6x−7)−(3x^2+3x−1)+(x−8)

= (2x^2+6x−7   )    −3x^2   -3x  +1     +   (x−8)

= (2x^2+6x−7   )    −3x^2   -3x  +1     +   x−8

= (2x^2+6x−7   )    −3x^2   -2x - 7

= 2x^2+6x−7       −3x^2   -2x - 7

= 2x^2+6x−7       −3x^2   -2x - 7

= - x^2 + 4x  - 14

step-by-step explanation:

the true ones are a b and d

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!