4. 276|اﻟﺮﻳﺎﺿﻴﺎت ﻟﺪروس ﻧﻤﺎذج|اﻟﺼﻒاﻟﻌﺎﺷﺮاﻟﺘﻌﻠﻴﻢ هﻴﺌﺔ2005
ﺑﺎﻟﻤﺴﺎﺣﺔ ﻡﻤﺜﻞ اﻟﻀﺮب)1(
اﻟﻤﺴﺎﺣﺔ1+اﻟﻤﺴﺎﺣﺔ2=اﻟﻤﺴﺎﺣﺔ3
ac + bc = (a + b)c
اﻟﻤﺴﺎﺣﺔ1=اﻟﻤﺴﺎﺣﺔ3–اﻟﻤﺴﺎﺣﺔ2
(a – b)c = ac – bc
اﻟﺸﻔﺎﻓﺔ اﻟﺸﺮﻳﺤﺔ10.1d
5. 277|اﻟﺮﻳﺎﺿﻴﺎت ﻟﺪروس ﻧﻤﺎذج|اﻟﺼﻒاﻟﻌﺎﺷﺮاﻟﺘﻌﻠﻴﻢ هﻴﺌﺔ2005
ﺑﺎﻟﻤﺴﺎﺣﺔ ﻡﻤﺜﻞ اﻟﻀﺮب)2(
اﻟﻤﺴﺎﺣﺔ1=اﻟﻤﺴﺎﺣﺔ2
ba = ab
اﻟﻤﺴﺎﺣﺔ1+اﻟﻤﺴﺎﺣﺔ2+اﻟﻤﺴﺎﺣﺔ3+اﻟﻤﺴﺎﺣﺔ4=اﻟﻤﺴﺎﺣﺔ5
a2
+ ba + ab + b2
= (a + b)2
a2
+ ab + ab + b2
= (a + b)2
a2
+ 2ab + b2
= (a + b)2
اﻟﺸﻔﺎﻓﺔ اﻟﺸﺮﻳﺤﺔ10.1e
6. 278|اﻟﺮﻳﺎﺿﻴﺎت ﻟﺪروس ﻧﻤﺎذج|اﻟﺼﻒاﻟﻌﺎﺷﺮاﻟﺘﻌﻠﻴﻢ هﻴﺌﺔ2005
ﺑﺎﻟﻤﺴﺎﺣﺔ ﻡﻤﺜﻞ اﻟﻀﺮب)3(
اﻟﻤﺴﺎﺣﺔ1=اﻟﻤﺴﺎﺣﺔ4+اﻟﻤﺴﺎﺣﺔ5–اﻟﻤﺴﺎﺣﺔ2–اﻟﻤﺴﺎﺣﺔ3
(a – b)2
= a2
+ b2
– ba – ab
(a – b)2
= a2
– 2ab + b2
اﻟﺸﻔﺎﻓﺔ اﻟﺸﺮﻳﺤﺔ10.1f