Answer:
A = 6x^2+3x-3
Step-by-step explanation:
expand the first term: [tex]4x^2-4x+1+\left(2x-1\right)\left(x+4\right)[/tex]
multiply the second terms: [tex]4x^2-4x+1+2x^2+7x-4[/tex]
simplify by combining like terms: [tex]6x^2+3x-3[/tex]
oui, je parle un peu de francais. <<Développer>> = expand et <<réduire>> = simplify.
