Question

ajuda pfv
a) (+8x2) + (–2x2) –(–5x²) = f) 6t – (+9t) – (–t) + 2t=

b) (+3ax) + (–9ax) –(6ax) = g) 4x² – (–2x²) + x² = c) 3x² +(–12x²) + (+8x²) =

h) –y – (–3y) + (–7y) = d) 3a – (–4a) – (+a) = i) 8a – 3a + (–a) – (–2a) = e) –

(+4mx) + (+mx) + 3mx = j) 7b – (–2b) + (–7b)=

Answer 1

Olá!

$a)( { + 8x}^{2} ) + ( - {2x}^{2} ) - ( - {5x}^{2} ) \\ + {8x}^{2} - {2x}^{2} + {5x}^{2} \\ {13x}^{2} - {2x}^{2} = {11x}^{2} \\ \\ b)(3ax) + ( - 9ax) - (6ax) \\ 3ax - 9ax - 6ax \\ 3ax - 15ax = - 12ax \\ \\ c) {3x}^{2} + ( - {12x}^{2} ) + ( + {8x}^{2} ) \\ {3x}^{2} - {12x}^{2} + {8x}^{2} \\ {11x}^{2} - {12x}^{2} = - {x}^{2}$

D) 3a -(-4a)-(+a)

3a+4a-a

7a -a= 6a

E) -(+4mx)+(mx)+3mx

-4mx+mx+3mx

-4mx+4mx= 0

F) 6t – (+9t) – (–t) + 2t

6t-9t+t+2t

9t-9t = 0

G) 4x² – (–2x²) + x²

4x²+2x²+x²

4x²+3x² = 7x²

H) –y – (–3y) + (–7y)

-y+3y-7y

-8y+3y = - 5y

I) 8a – 3a + (–a) – (–2a)

8a -3a-a+2a

10a-4a = 6a

J) 7b – (–2b) + (–7b)

7b +2b-7b

9b-7b = 2b

Espero ter ajudado. Bons estudos!