1) 4b^4+11b^3-52b-143 = (4b+11)(b³-13)
2) 2xz-3xb-14z+21b = (2z-3b)(x-7)
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Answers & Comments
1) 4b^4+11b^3-52b-143 = (4b+11)(b³-13)
2) 2xz-3xb-14z+21b = (2z-3b)(x-7)