1. multiply. (7x+3)(4x−5) 2. factor. 49x^8−16y^14 3. factor. 7x^2+16x+4

1. (7x+3)(4x−5) =

multiply everything by each other than combine like terms

= 28x^2-23x-15

2. 49x^8−16y^14

rewrite 49x^8 as (7x^4)^2, rewrite -16y^14 as -(4y^7)^2

 then factor to get (7x^4 +4y^7)(7x^4 -4y^7)

3. 7x^2+16x+4  = (7x+2)(x+2)

Step-by-step explanation:

1. (7x+3)(4x−5)

First, Distribute

(7x+3)(4x−5) = 7x(4x-5)+3(4x-5)

Next, we expand the brackets

Simplifying like terms

2.

Looking at the terms, you notice that each of the numbers is a perfect square.

Next, we express the variable terms as a power of 2. This is to enable us apply a particular principle in factorization.

Now, we apply the Principle of Difference of Two Squares.

(a-b)(a+b)

Therefore:

3.

i believe the answer to be 48

step-by-step explanation:

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation: