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NISA [10]
3 years ago
9

(4x5 + 7x4 + 36x + 63) = (4x + 7)

Mathematics
1 answer:
Nana76 [90]3 years ago
3 0

Answer:

x = -1.75 , +/- 1.1892i.

Step-by-step explanation:

4x5 + 7x4 + 36x + 63) = (4x + 7)

4x^5 + 7x^4 + 32x + 56 = 0

x^4(4x + 7) + 8(4x + 7) = 0

(x^4 + 8) = 0 or 4x + 7 = 0

4x + 7 = 0  

x = -1.75.

4x^4 = -8

x^4 = -2

x = +/- ⁴√-2

x = +/- 1.1892 i.

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