Factor out a GCF of 4, then you are left with perfect squares.
4(100-9x^2)
Factor what is left as a difference of perfect squares (the outside and inside terms from FOIL should cancel out which is why each parenthesis has a different sign
f(10+3x)(10-3x)

5 0

3 years ago

What is the area of the composite figure above?

Keith_Richards [23]

Answer:

44 square cm

Step-by-step explanation:

7 0

3 years ago

Does anyone know What is x+7=-7x-8

rjkz [21]

Answer:

$x=-\frac{15}{8}$

Step-by-step explanation:

$x+7=-7x-8$

Add 7x to both sides:

$8x+7=-8$

Subtract 7 from both sides:

$8x=-15$

Divide both sides by 8:

$x=-\frac{15}{8}$

3 0

4 years ago

If g(x) = x2 + 2, find g(3). (2 points) a 9 b 8 c 11 d 6

kap26 [50]

Answer:

c) 11

Step-by-step explanation:

g(x)= x² + 2

x = 3

substitute x for 3

g(3) = (3)² + 2

g(3) = 9 + 2

g(3) = 11

4 0

3 years ago

What is 7.1+5.4+2.9 im very confused ​

What is 7.1+5.4+2.9 im very confused