Answer the following. Each question carries 4 marks.
26. Find a and b, if 25+73 2V5-73 + 25-73 275+73 a + V15 b
27. Factorise x - 3x?- 9x-5.
Answers
Answered by
0
Answer:
x³-3x²-9x-5
x² - 4x² - 4x -5x -5
= x²(x + 1) - 4x (x + 1) - 5(x + 1)
= (x + 1)(x² - 4x - 5)
= (x + 1)(x² -5x + x - 5)
=(x + 1)(x - 5) (x + 1)
hence, (x+1), (x-5) and (x +1) are the factors of given polynomial.
hope it helps you
please mark me as brainliest
Similar questions