Question

plz help me to solve this ​

Answer 1

Step-by-step explanation:

your answer is here

I am explain step by step plzzz make me brainlist

Answer 2

Answer:

I) 2x²+11x-21=0

=>2x²+14x-3x-21=0

=>2x(x+7)-3(x+7)=0

=>(x+7)(2x-3)=0

=>x=-7 or, x=3/2

ii) 3u²-10u+8=0

=>3u²-6u-4u+8=0

=>3u(u-2)-4(u-2)=0

=>(u-2)(3u-4)=0

=>u=2,u=4/3