Answers please

i need help with these. answers please

Which methods have you learnt for solving quadratics? Have you done any working so far?

EDIT: Oops I just realised it says by bompleting the square!

i dont understand any of it

i dont understand any of it

For the first one start by finding an expression of the form $\left( x+a \right)^{2}+c$ where a and c are constants and is equal to $x^{2}+18x-10$

So, $\left( x+a \right)^{2}+c=x^{2}+18x-10$

HINT: Find a by halving the coefficient of the $x$ term in the origional quadratic (which in the first question is 18).

can you give me the answer to the first one so i can see how it worked please

can you give me the answer to the first one so i can see how it worked please

$(x+a)^2+c=x^2+ \underbrace{2ax}_{18x} + \underbrace{a^2+c}_{-10}=x^{2}+18x-10$. Hope that helped...

how do i get the two possible values for x from that

can you give me the answer to the first one so i can see how it worked please

how do i get the two possible values for x from that