Q7. Find the error in the students' work. f(x)= -3x² - 2x + 5
f(-2) = -3 -2²- 2- 2 +5
f(-2) = -3 - 4- 2 - 2 + 5
f(-2) = -6
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you need to multiply x with its co efficients, not literally put the numbers there
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