Question

& find a and b
a and b if a -1 and x+1 are
the factors of ax^4-7x^3+9x^2+6x-10​

Answer 1

Step-by-step explanation:

$(x - 1) = 0 \\ x = 1 \\ a( {1})^{4} - 7( {1})^{3} + 9( {1})^{2} + 6(1) - 10 = 0 \\ a(1) - 7(1) + 9(1) + 6(1) - 10 = 0 \\ a - 7 + 9 + 6 - 10 = 0 \\ a - 17 + 15 = 0 \\ a - 2 = 0 \\ a = 2$