Algebra

1.spimlify this algebraic expiration 4x-(2-3x)-5 with details explain.

Expert Solution

4x-(2-3x)-5

We want to group the like terms, i.e. x with x and numbers with numbers

To do this we have to remove that bracket know in computer as a firewall.

Notice the sign before the bracket is (-). This is important to note

In removing the brackets the sign before the numbers or alphabet in the bracket will change.

If you had - sign it will become a + sign

Here we go

4x-(2-3x)-5

4x - 2 + 3x - 5

Notice +2 became -2 and -3 became + 3 when the bracket (or fence) was removed.

Now group those that look alike together

You get 4x + 3x and -2 & -5

Result in 7x and -7

bring them closer and you get 7x-7

you could also go another step by looking at the 7x -7 where you see 7 as the common number

result in 7(x-1).

7x-7

Arjoma Karan answered 2 years ago

Algebra

What is the sum of the two solutions to the quadratic equation (x + 4)(x - 3) = 7

Algebra

What is the product of the two solutions to the quadratic equation (x - 2)(x - 6) = -3

Algebra

What are the two solutions to the quadratic equations 2 x2 + 3x - 2 = 0?

algebra

If , then what is the exact value of x5+1/x5 for x≥0?

Linear algebra

(a) Are there matrices A,B∈Mn(R)A,B∈Mn(R) such that AB−BA=IAB−BA=I. (b) Suppose that A,B∈Mn(R)A,B∈Mn(R) such that (AB−BA)2=AB−BA(AB−BA)2=AB−BA. Show that AA and BB are commutable.

Linear algebra Matrix

Let A ∈ Mn(R) such that I + A is invertible. Suppose that B = (I − A)(I + A)-1(a) Show that B = (I + A)−1(I − A)(b) Show that I + B is invertible and express A in terms of B.