Question

give me answer of q.15 backside answer of textbook is x
${x}^{4} - 16 {x}^{2} + 22x - 3$
please describe how..fast..
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Answer 1

Step-by-step explanation:

just multiplied

plz mark it as brainliest

Answer 2

Here ,

$(x - 3)( {x}^{3} + 3 {x}^{2} - 7x + 1) \\ = x( {x}^{3}) + x(3 {x}^{2} ) - 7x(x) + 1(x) + {x}^{3} ( - 3) + 3 {x}^{2} ( - 3) - 7x( -3) + 1( - 3) \\ = {x}^{4} + 3 {x}^{3} - 7 {x}^{2} + x - 3 {x}^{3} - 9 {x}^{2} + 21x - 3 \\ = {x}^{4} - 16 {x}^{2} + 22x - 3$

hence we get the result..

hope it helps

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