Question

Area : 35y2 + 13y-12​

Answer 1

Answer:

what is the question I can't understand

Answer 2

$\huge\color{red}\boxed{AnSwEr}$

35y² + 13y - 12

35y² + 28y - 15y - 12

7y[5y + 4]-3[5y + 4]

(7y - 3)(5y + 4)

then from here y = +3/7 or y = -4/5

as we know aera cannot be -ve so y = +3/7 is value

which = 0.428

$\large\color{magenta}\boxed{explanation}$

• we have to do factorisaton of given number

• we do factorisaton by middle term splitting

• ie we splite mid term into factors of products of let and first number

• after factorise we get two values of y but one is -ve and area can't be -ve so we take +ve value

$\huge\color{pink}\boxed{extrainfo}$

you could solve this by using quadratic formula which is

$\frac{ - b \: ± \sqrt{ {b}^{2} - 4(a)(c) } }{ 2a}$

where a = 35 b = 13 and c =-12

only use for equation which has highest power 2

hope it helps you

be brainly