BDE are the correct options
let x represent granddaughter and x +2 for grandson and together they = 12
so then we have the equation of x+2+x = 12
combine like terms 2x +2 =12
-2 from both sides to isolate x
2x=10 divide both sides by 2 to get x by itself
so we get x = 5 then add 2 +5=7
so grandson is 7 and granddaughter is 5
Answer:
y=4/x^3
Step-by-step explanation:
(I think you mean x2 is x squared correct? if so) x^2+x^2-5x-x+7
2x^2-6x+7
