Question

Помогите плиизз 1. (8х+3)= 2. (7а²+2а)-(4а²-3а)= заранеее спасибо

Answer 1

$8x + 3 = 2 \\ 8x = 2 - 3 \\ 8x = - 1 \\ x = - 1 \div 8 \\ x = - \frac{1}{8} \\ x = 0.125$



$(7 {a}^{2} + 2a) - (4 {a}^{2} - 3a) = \\ = 7 {a}^{2} + 2a - 4 {a}^{2} + 3a = 3 {a }^{2} + 5a$