Simplify: (-7x + 5) - (2x2 – 8x + 6). Choose the standard form of the answer. A. -2x2 + x-1
B. -9x2 + 8x - 1
C. -5x2 + 8x-1
D. 2x2 - 15x - 1

Expression is a set of numbers, variables, and mathematical operations. The standard form of the expression (-7x+5)-(2x²–8x+6) is -2x²+x-1.

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

As the expression is given to us (-7x + 5) - (2x² – 8x + 6), in order to simplify the problem we need to open the brackets. therefore, the expression can be solved as,

Hence, the standard form of the expression (-7x+5)-(2x²–8x+6) is -2x²+x-1.

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A.-2x2+-1

Step-by-step explanation:

(-7x+5)-(2x2-8x+6)

-7x+5-2x2+8x-6 then collect like terms

-2x2-7x+8x+5-6

-2x2-x+1

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687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5