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aivan3 [116]
3 years ago
7

PLZ HELP I WILL GIVE BRAINLIEST

Mathematics
2 answers:
snow_tiger [21]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

(a)

The student has distributed the second parenthesis by 1 instead of - 1

(b)

Given

(x² - 3x + 4) - (x³ + 7x - 2)

distribute the first parenthesis by 1 and the second by - 1, that is

= x² - 3x + 4 - x³ - 7x + 2 ← collect like terms

= - x³ + x² - 10x + 6

Art [367]3 years ago
3 0

Answer:

a. the sign is interchange

it should be = x^2 - 3x + 4 - x^3 - 7x + 2

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