Pqr=qps work out the value of qps

89°

Step-by-step explanation:

Total inner degree of PQRS = (4-2)*180° = 360°

PST is a straight line : 180°

angle PSR = 180-128

=52°

angle RQP + angle QPS = 360 - 52 - 130 = 178°

Angle PQR = Angle QPS

Angle QPS = 178/2 = 89°

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

answer is b

step-by-step explanation: