Some please help me with this I’ll mark brainliest thank you

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?