Is the answer A, B,C, or D?

x^2 +4x-21

Step-by-step explanation:

(x-3) (x+7)

FOIL

first x*x = x^2

outer: 7x

inner: -3x

last: -3*7=-21

Add them together

x^2 +7x-3x -21

x^2 +4x-21

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.