Find the difference between: (4x4 +x3 +7x) - (12x2 - 9x - 5)
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Answer:
x³ - 5x² + 16x + 21
Step-by-step explanation:
It is given that,
(4x4 +x³ +7x) - (12x² - 9x - 5)
By doing BODMAS (Brackets of Division, Multiplication, Addition, Subtraction)
= (16 + x³ + 7x) - (12x² - 9x - 5)
= (x³ + 7x + 16) - (12x² - 9x - 5)
= x³ + 7x + 16 - 12x² + 9x + 5 ________(negative sign before the second bracket multiplied to the terms inside the bracket)
= x³ - 12x² + 7x + 9x + 16 + 5
= x³ - 5x² + 16x + 21
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