Question

Please do only answer for 7 th question

Answer 1

Answer:

factorise f(x)

..u will get 2 values for x ..then make each of them equal to zero

then there's yr answer

Answer 2

Answer:

6. f(x)=x²+x-2

f(1)=(1)²+(1)-2

=> 1+1-2

=> 0

f(-1)=(-1)²+(-1)-2

=> 1-1-2

=> -2

7. x²+2x-35

=> x²+7x-5x-35

=> x(x+7)-5(x+7)

=> (x-5)(x+7)

=> x=5 and x=-7

hope it helps you....☺️✌