ananya37933 ananya37933

16-07-2020
Mathematics

contestada

Using (x + a) (x + b) = x² + (a + b) x + ab, evaluate 75 x 77

Respuesta :

lucasella lucasella

16-07-2020

(x + a) (x + b) = x² + (a + b) x + ab

75 * 77=

=(70+5)(70+7)

=70²+(5+7)*70+5*7

=4900+12*70+35

=4900+840+35

=5775

Answer Link

Otras preguntas

What are all the boundaries

This shows how to copy the triangle, cut the copy into pieces, and form a rectangle. What is the area of the rectangle? ( ) square millimeters What is the

pls help me to answer this

if 3^2x+1 = 3^x+5 what happened the value of x

Is it.. you would be surprised or you would be surprise?

Two vertices of a right triangle have coordinates (37) and (310). The segment that connects these points is a leg of the triangle Which set of coordinates for t

What is the purpose of a family communication plan? o to increase communication of instructions during an emergency O to contact each other when an emergency st

Which of these is a theme statement? A. The story had an impact on many readers. B. A group of friends achieves success in the city. C. Hard work and perseveran

About 14 weeks ago, there were 42 mold spores found in a garden. After a few weeks of observation, it is determined that the number of mold spores in the garden

i know how to solve it but i’m just not used to the bigger numbers. could someone still walk me through step by step?